Rip high-quality MP3s in Windows Media Player 8
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The relationship between Windows Media Player 8 and the MP3 audio format is widely misunderstood. Basically, WMP8 will be able to playback MP3 files, but encoding (or "ripping" CD audio into MP3 format will require an MP3 plug-in. So during the Windows XP beta, Microsoft is supplying a sample MP3 plug-in for testing purposes, but it's limited to 56 Kbps rips, which is pretty useless. However, if you have an externally installed MP3 codec, you can use WMP8 to rip at higher bit rates. But you'll have to edit the Registry to make this work.
Fire up the Registry Editor and navigate to the following key:
HKEY_LOCAL_MACHINE SOFTWARE Microsoft MediaPlayer Settings MP3Encoding
Here, you'll see sub-keys for LowRate and LowRateSample, which of course equates to the single 56 Kbps sample rate you see in WMP8. To get better sampling rates, try adding the following keys (Using New then DWORD value):
"LowRate" = DWORD value of 0000dac0
"MediumRate" = DWORD value of 0000fa00
"MediumHighRate" = DWORD value of 0001f400
"HighRate" = DWORD value of 0002ee00
Now, when you launch WMP8 and go into Tools, then Options, then Copy Music, you will have four encoding choices for MP3: 56 Kbps, 64 Kbps, 128 Kbps, and 192 Kbps. Note that you will not get higher bit rate encoding unless you have installed an MP3 codec separately; the version in Windows Media Player 8 is limited to 56 Kbps only.
Find the appropriate location in the Registry... ...add a few DWORD values... ...And then you'll be ripping CDs in higher-quality MP3 format!

Create a Shortcut to Lock Your Computer
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Leaving your computer in a hurry but you don't want to log off? You can double-click a shortcut on your desktop to quickly lock the keyboard and display without using CTRL+ALT+DEL or a screensaver.
To create a shortcut on your desktop to lock your computer:
Right-click the desktop.
Point to New, and then click Shortcut.
The Create Shortcut Wizard opens. In the text box, type the following:
rundll32.exe user32.dll,LockWorkStation
Click Next.
Enter a name for the shortcut. You can call it "Lock Workstation" or choose any name you like.
Click Finish.
You can also change the shortcut's icon (my personal favorite is the padlock icon in shell32.dll).
To change the icon:
Right click the shortcut and then select Properties.
Click the Shortcut tab, and then click the Change Icon button.
In the Look for icons in this file text box, type:
Shell32.dll.
Click OK.
Select one of the icons from the list and then click OK
You could also give it a shortcut keystroke such CTRL+ALT+L. This would save you only one keystroke from the normal command, but it could be more convenient.

Create a Shortcut to Start Remote Desktop

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Tip: You can add a shortcut to the desktop of your home computer to quickly start Remote Desktop and connect to your office computer.
To create a shortcut icon to start Remote Desktop
Click Start, point to More Programs, point to Accessories, point to Communications, and then click on Remote Desktop Connection.
Click Options.
Configure settings for the connection to your office computer.
Click Save As, and enter a name, such as Office Computer. Click Save.
Open the Remote Desktops folder.
Right-click on the file named Office Computer, and then click Create Shortcut.
Drag the shortcut onto the desktop of your home computer.
To start Remote Desktop and connect to your office computer, double-click on the shortcut

Instantly Activate a Screensaver
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Turn on a screensaver without having to wait by adding a shortcut to your desktop:
Click the Start button, and then click Search.
In the Search Companion window, click All file types.
In the file name box, type *.scr
In the Look in box, choose Local Hard Drives (C or the drive where you have system files stored on your computer.
Click Search.
You will see a list of screensavers in the results. Pick a screensaver you want. You can preview it by double-clicking it.
Right click on the file, choose Send To, and then click Desktop (create shortcut).
To activate the screensaver, double-click the icon on your desktop

How do I get the "Administrator" name on Welcome Screen?
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To get Admin account on the "Welcome Screen" as well as the other usernames, make sure that there are no accounts logged in.
Press "ctrl-alt-del" twice and you should be able to login as administrator!
finally worked for me after i found out that all accounts have to be logged out first

Fix Movie Inteferance in AVI files
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If you have any AVI files that you saved in Windows 9x, which have interference when opened in Windows XP, there is an easy fix to get rid of the interference:
Open Windows Movie Maker.
Click View and then click Options.
Click in the box to remove the check mark beside Automatically create clips.
Now, import the movie file that has interference and drag it onto the timeline. Then save the movie, and during the rerendering, the interference will be removed.

Create a Password Reset Disk
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If you're running Windows XP Professional as a local user in a workgroup environment, you can create a password reset disk to log onto your computer when you forget your password. To create the disk:
Click Start, click Control Panel, and then click User Accounts.
Click your account name.
Under Related Tasks, click Prevent a forgotten password.
Follow the directions in the Forgotten Password Wizard to create a password reset disk.
Store the disk in a secure location, because anyone using it can access your local user account