Welcome back, Anodizer.
If you want to play the campaign, it is a good idea to download the 2.677 Patch for CE. The stock game (2.670) crashes every time in a particular mission.
It sounds like you're looking for an easy TOS-themed installer for your game. Nobody has assembled one specifically for Community Edition yet. But anything for SFC2:EAW should work for SFC2:CE.
Ship Edit is effective for editing the shiplists, but it can't install custom models. A spreadsheet program, alternatively, can be used to edit the shiplist.
In shiplist.txt this is the important "Geometry" column for, let's say, a TOS Enterprise model -- the Federation F-CA:
assets/models/fca/fca.mod
This points to the stock TMP Enterprise. Put your TOS model files (presumably fca.mod, fca_brk.mod, and various .bmps) into a new folder in ...\Assets\Models called, for instance, TOS_fca.
Then update the F-CA geometry entry in shiplist.txt to find that new folder: assets/models/TOS_fca/fca.mod
The game should load the famous ship from the 1960's TV series if you select the F-CA in a skirmish or campaign.