Hi Ladyday
You can help uploads by opening the OSX firewall for gnutella in System Preferences->Sharing->Firewall->New->Gnutella/Limewire (6346)

btw, if you are running 10.2.4, you should run the Software Update in System Prefereces also. It includes a Java update and two system updates.

I've heard the eMac is pretty sweet! If you're new to OSX, here's my favourite OSX troubleshooting link http://www.macattorney.com/tutorial.html