I just installed XP Pro Service Pack 2. I don't know if that would have included the .NET stuff.
The main annoyance for me, is that when starting Windows, it shows me a log-on screen, with just my account. I'd rather it just start already. Especially since I dual boot.
Not sure if it's sp2 or sp3, but MS got rid of the autologin capability because it was a "security flaw."
If you open up the registry by running "regedit.exe" and browse to:
HKEY_Local_machine\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
You can create two entries that will re-enable autologon.
Highlighting the Winlogon folder, go to Edit - New - String Value. Type in "DefaultUserName" for the String name, and for the value, put in the user name you want the computer to use for auto login.
Repeat the process for "DefaultPassword" as the second string name, typing the password in for the value. Reboot, and it will automatically log in. As long as they are valid usernames and passwords.