When you visit your forum, are you prompted to download the files? This happens to many users and its not your fault. The problem is that your host does not support ASP which Snitz Forums run on.
The only way you can fix this is by changing hosts. If you are looking for a free host to host your forums and/or site then check out http://www.free-hosts.info. If you would like a to find a host that you will get better service from and are willing to pay for it, then check out the following list of hosts.