Uninstalling mods.

How exactly do i uninstall mods? I tried removing the intall/foo.txt file, and I got crashes on startup as it asked for the files from the mod.

first delete all the ships what u created,then delete the installs of each mod.
the ships txts are in C:\Documents and Settings*user name*\My documents\My Games\GratuitousSpaceBattles\ships
(for XP sp3)
i dont know were is that folder on mac or win 7…

Even better question, where is it on Linux. <_<
Edit: ~/My Games
Also thanks.