Ack, ok, I'm back. The front page works, and the posts and pages are all there in the admin, but when I click on any of the pages I get this error:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, [no address given] and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Any ideas?