Thread: background?

Is there any way i can change the back ground on it?
Like my all files saved on a card. But when i go to picture press options nothing is there saying set as or use as. I also tried going to <<getting started>> and background. is says <<use this picture as a background>> I browse. take one i want. press ok on top. BOOM nothing happens same background I had from stock.
Im new to HTC. And reallt noobie with it. any addition help will be appreciated.
Thank you!