With logonstudio vista on XP, Vista and 7, all that can be changed is the wall image, the rest is default for the OS it is on.
I downloaded and installed the old XP version and it refuses to import any of my .BMP images.
Trying to import how.
With the XP version of logonstudio you need to use the splash style logon to get the Vista look.
Example here
The standard XP logons are just the default Windows logon with images changed so will still have default style to them.