How do you download a picture from the gallery here at droidforums and make it your wallpaper? I have the DroidX........Yes, Im a newbie!!
Are you using your phone to navigate the site, or a PC of some sort?
Bagz Droid Razr, Most Nearly Bone Stock...Rooted...ROM`d too many times to list...and still kicking iPhones in the @$$ on a daily basis....
From your phone press and hold the picture, it should go into your download directory.
Then menu - wallpaper - media gallery, choose the picture you want.