i am right now on windows xp and iis v5.1, Can i upgrade this to IISv6.0 on windows xp, is it supported. IF so where should i download the installation file for it.
Look here for a few suggestions. By default it isn't possible, but since the files for IIS 6 are inside Service Pack 3 (for Windows Server 2003) you can extract them (see the link for instructions how to do that).
You could also look at IIS Express.