Thank you for the quick reply, Lord of the Rings.
How would I set within Shareaza that I am using port forwarding?
The only thing I did within Shareaza is first I left the default port as "6346", and when that didn't work I tried changing it to "16346". Of course, I restarted Shareaza each time I made changes.
I am pretty sure no other programs are using the same ports since I have tried two different ports, but how would I find this out for sure? Shareaza is the only program I set up port forwarding for on my router.
Also, in case you're wondering, I am running the latest Shareza, 2.4 (not the fake one).