Re: Upgraded to windows professional,now im confused!!
Mate, honestly, just start again.
Firstly, back up everything you need to save.
Pop in your XP Pro cd, delete any partitions on the hard drive (this will wipe the hdd clean), recreate your new partition for the operating system and install to it. If you have multiple partitions on a single disk the delete the old os and new os partitions.
If your XP Pro is the upgrade version you'll need a previous os disk to verify a previous installation during this process, just pop in your home disk (any disk other than 95 will work) let the XP installer verify then away you go.
To remove the old install without formating gets quite messy as you have to rebuild your boot sector etc
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