I think you guys misunderstood him. (Or maybe I misunderstood him

)
@LieutenantGeneralMobius, yes, you should be creating a new tbl file. First, don't use word though. Second, you don't ever want to overwrite the ships.tbl in a VP, unless you are creating your own mod.
If you're using SCP, you can just take the table entry included with the mod and stick it in a file like so:
Freespace 2/data/tables/ship_name-shp.tbm#Ship Classes
;; Table data goes here
#End
Note that everything before "-shp.tbm" can be anything you choose, as long as the total filename is less than 32 letters/numbers. Also, "Freespace 2" represents the place that you have Freespace 2 installed.
If you don't have SCP, you'll have to create a new "ships.tbl" in data/tables, copy-paste the stuff from the original ships.tbl in, and then add the data from the mod's .zip right below "#Ship Classes"