Custom ships/abilities

There are custom race files under My Documents/My Games/GC2DarkAvatar. Deleting them should reset the races to their standard abilities, although make sure not to delete any truly custom races you may have made.

Also, in the same folder, there is a ships folder. Deleting the two files that correspond to the ship design you want to remove should get rid of it.

Where would this be in Vista?

EDIT: found it