when i delete all my cache files then load up just one level and look at my caches again there are a lot of them. how do i know which one is sidewinder? i know that BG is 003.
There is no set name for each map. If you clear the cache then load only one map from multiplayer and/or only one map from single player, the multiplayer map will be named cache003.map, and the multiplayer one will be cache000.map. 002 is the user interface, I'm not sure about the others.
Cache004 and Cache005 are also MP maps. If you clear the caches before you play and then play for instance: First, Bloodgulch; Second, Sidewinder; Third Chillout. Then:
Bloodgulch is cache003.map
Sidewinder is cache004.map
Chillout is cache005.map
The best way to find out what cache file is the level that you just played, is to look at the "Last Modified Date" in FTP. The most recent one is the level you have just played.