Welcome.
First of all all issues and bugs with all the appropriate solutions ar eposted under the general support section
http://www.truecombat.us/forums/viewtopic.php?t=851
Anyway, this is the solution to your problem.
"Empty server list"
solution: In the server browser make sure that "source" is set to "internet"
solution: Open the console (~) and type "/cl_maxping 800, press enter and refresh the list"
solution: Open up the firewall for ports 27950 to 27970
solution: Check your ISP and make sure you are getting a connection
solution: Use a third party server broswer
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ext.
solution: make sure all the server filters are off.
solution: click on the refresh button
solution: Use All-Seeing-Eye, Qtracker, Gamespy Arcade, or XFire.
-XenoKiLLer-