Not really. The best options are either the forums or by posting support tickets, but, you do need the Internet available for either of those options to work. I'll post more than one question / possible area here, in case you want to go through that process again.
Can you at least access the Internet from the WinGate machine itself? (Without proxies set in the browser) If you can, that means that the Internet itself is working. (Assumed it would be, as you can get out with WinGate installed)
You say you don't see any activity on the server when a client tries to connect. How are the clients connecting? If they are using NAT or WGIC, try a direct proxy connection to see if a connection can at least be established to the WinGate Server. Also, try disabling intercepts (If you have them turned on) to see if that makes a difference. (Allowing the pure client connection to go through). You can disable intercepts by going into the appropriate WinGate Service (WWW is the easiest to test with) and unticking the "Use Intercepts" option on the "Sessions" page.
If you run a "netstat -an" on the host computer (WinGate Server), can you see WinGate listening on any ports? This will be from a command prompt, and should have output similar to:
TCP 0.0.0.0:809 0.0.0.0:0 LISTENING
TCP 127.0.0.1:808 0.0.0.0:0 LISTENING
TCP 127.0.0.1:1027 0.0.0.0:0 LISTENING
If not, your WinGate server is not listening. This is probably a bindings problem - in which case you'd need to check each service to ensure that it is binding to your LAN adapter (Internal) so it knows about incoming connections.
If WinGate is listening, it's bound correctly and your client traffic is not reaching it - check (a) the port security actions under ENS and (b) the various firewall options you have turned on / off. Also, check the firewall hits you might be receiving. If any of them are for your internal adapters, you might have a configuration problem there. (WinGate blocking your client machines).