This registry file works under XP home; someone tried it and posted in the old forum. Just open the reg file in a text editor and change the default path to the where you installed Divinity.
If you installed it to; "E:\Games\Divine Divinity"
you would change the
"target folder"="C:\\Programme\\Divine Divinity"
line so it read
"target folder"="E:\\Games\\Divine Divinity"
