Pssword

If you purchased it from them, they should provide you with the password (provided it is a legal installation).

If it's XP pro, another solution is to connect to a domain and log on with a valid username and password for the domain.

There aremethods to crack passwords and there is the Linux boot disk method (which works with 2k and NT...perhaps XP)...but the real solution is to ask the person who sold you the machine. If you don't have a license for the software you shouldn't use it.Good luck...

If WINXP is installed on a fat32 partition then boot to win98, broese to the winnt\system32 direcotry on the winxp partition. Rename logon.scr to logon.old, copy cmd.exe to logon.scr, resaert the computer boot to winxp and wait, don't touch the comptuer (keyboard or mouse) wait until the command prompt comes up. Use net user command to change to administrative password. Type exit and logon. Delete (or rename)logon.scr, rename logon.old to logon.scr.
This works because before you log on if there is no activity windows launches the logon.scr screen saver.
If it's a NTFS partition, you can install another copy of winxp and follow the above then delete the new partition. Or you can plug this harddrive into another computer running winxp or win2000 and the above steps.