Kopend,
We use Quickbooks as well and back up to a stick and have had no problems.
Are you saying QB program will not open at all?
If so then if I was in that situation I would follow the advice already given and do a roll back to before the crash and try again.
I don't know which version of QB you are using, but there are several forums where you can get advice, the one we use run by the people who sold us Quickbooks is at the following web address:
http://www.quickbooksheaven.com/phpbb/index.ph p