The gcf files are in "steamapps"
G:\Steam\SteamApps\
[email protected]\counter-strike\cstrike\addons
Yes I do have a listenserver. It launches from a desktop icon which has the metamod .dll specified in it's target.
G:\Steam\Steam.exe -applaunch 10 -dll addons\metamod\dlls\metamod.dll
Incidently CZ and CS are identical in this listenserver default map issue.
Maybe the easiest way is to draw from a text file in amxx\configs that has the names of the default maps.
The only dedicated server I've used is the one that comes with Steam. I'm d/ling the hlds_v1120.exe right now to see the differences.