Hi,
While trying to change "change the way user login or logoff" in winxp the following error shows up
"Client Service for Netware has disabled the Welcome Screen and Fast User Switching. To restore these features, you must uninstall Client Service for Netware"

I tried right click on network connection(current)->properties->choose netware services->uninstall->reboot but no go

Any suggestions..

Have you tried doing this in safe mode ?
You must also ensure that the account you are using has full admin rights, hence the safe mode idea.

Here are 2 links that address your issue -- Google would be your friend if you let it [or ask jeeves]
How do I uninstall Client Services for Netware on Windows XP Professional?;-) : Non mobile discussion : General discussions @ Esato
Windows Article - Welcome

Yes its an admin account. No go in the safe mode either
??