screensaver problem

[bluzeboy]

this is probably trivial but here it is, all my screensaver from xp work fine but when i try to select one that i have purchased everything displays on the small preview screen , but when i try to make it my default nothing appears on my desktop
any suggestions

 

[Hipster Doofus]

Guessing here. Are they in the same folder as the xp screensavers?