Hammer,
When you build a game from within FPS Creator, it is automatically going to put all the files needed for the game into one main folder. You get to specify the name of that folder and the location in the 'Build Game' menu.
Once the game has been built, all you have to do is find where you put that folder and
right-click on the folder (don't open the folder, just right-click on it). When you do that, one of the options in the menu will be
'Send To'. Select
'Send to' and then choose
'Compressed (zipped) folder'. Once you do that, a new file will be dropped into the same location that you found the folder, only now it will end with a
.zip and will have the same exact name as the folder you were zipping.
That
.zip file is the one you need to select when making a submission to FPSCreators.com