SSL protects the data being sent between the user and the server. It does nothing to protect the server. It doesn't protect you against hacking at all (in fact it makes you more vulnerable on some hosting setups) and does nothing for your site if your visitors aren't sending personal data (credit card details).
Try to get a refund for whatever you paid for the SSL, the only way to protect your server from hacking is to use good passwords and common sense. Minimise the attack surface by giving as few applications as possible access to your file structure / database (obviously VB needs this, but it's generally considered secure and can probably be improved by VB firewall, although I've never used it so can't attest to whether or not it's effective).
If you want to take it further you can get into web app controllers / firewalls and cloaking (Barracuda Networks - Worldwide leader in email and Web security) and stuff but if you think you need that level of protection, you should probably hire someone who knows what they're doing, or at least ask on a forum dedicated to web security.
