Quake 2 is one of those earlier fps games with no ingame server browser. v320 is the latest you can get a patch (317-320 are intercompatible though). Generally we just used Gamespy back in the dya, or stuck to the same 5 or 6 servers. (wireplay or barrysworld etc.) Curiously the MSN Gaming Zone had a good line in player-run servers, possibly still does. Quake 2's multiplayer code is a bit flaky compared to quakeworld, but these days broadband ought to make that irrelevant.
Quake 2 Threewave CTF is still the best CTF ever made, so give it a go.
And out of the mist came.. oh wait... it's just more mist...