Help me with my com

Hi there!
Recently I tried to change my desktop theme.
At first it worked.
I tried some which requires windows theme patcher.
But after a couple of times, I can't patch themeservice.dll anymore.
Everytime I try to change the theme it turns into a windows95 alike desktop
After I tried system restore,i can patch all three in windows theme patcher.
But everytime i try to change the theme,nothing happens.
Anybody good at this kinda things?Help me out please.

I changed my facebook theme and layout too.
I changed my blog layout too.
Hope you liked it.