I don't really understand what you're saying, and it would help a lot if you would tell us which version of PSE, but in any case the first thing to try when PSE gets weird is to delete the prefs. Quit the editor (quit PSE if PSE 8 or lower) then relaunch it while holding down command+shift+option. Keep the keys down till you see a window asking if you want to delete the settings file. You do.
Also, the hand tool is used to scoot an image around to change the part that's visible.
Thanks, that worked, I have PSE 10.