Computer Help : Themes

[Tathariel]

I've been trying to download different themes for my desktop, but when I open the file, windows does not know what program to use when I open it.
I cant find any special program or download that lets me configure themes. If anyone has any info about changing desktop themes, or skins, any help would be appreciated.

 

[Sanguis Innocentium]

It depends on what type of windows do you have: Xp, Vista, or Windows 7?

 

[Tathariel]

windows 7