Hi, Starlite!
1. Which operating system (OS) are you using - Windows XP, Windows Vista, something else?
2. What do you see when you "plug" your camera into your computer?
3. Your deleted pictures may be recoverable. If you haven't done so - DON'T EMPTY THE TRASH/RECYCLE BIN. (Even if you have, they may still be recoverable.)
EDIT: Here's one freeware data recovery program for Windows (says it may also be able to recover erased photo files from a digital camera):
Recuva
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.