Greetings and welcome,
You cant change the default index.xml file, you have to have another folder holding your altered UI files. Also with vista if you change certain files (vgclient.ini for example) you have to drag it to the desktop, alter it than place it back in the correct spot due to Vista's access control.
I hope this helps a bit.
Author of: Default Plus
- With Infomap, Experience numbers, and all percentages and amounts.
Author of: High Fantasy
- A complete graphic and code re-write of the Vanguard UI to lend towards the high fantasy feeling.