I've been wanting to play online with you guys but once I get to the level, it says "connection to host lost", is there a quick fix to this or is there a complicated physical problem? (I've got a Belkin router so i'm worried.)
Can you see the game lobby and post a screen shot for us? And also make a screen shot where it says connection lost?
If you have been modding a lot, you should check to see if you have the stock files in place. Having a mod can cause a crash.
Here you go (For some reason the I couldn't get a pic of the in-game lobby, but it looked pretty normal with around 6-7 servers, I chose the SWBFGamers sniper tournament, though I chose the SWBFGamers 1.0 style server in the previous attempt.), I made sure my Mission.lvl and such were the stock versions.
EDIT
Got screenshot, still need help.