quick question... How do you give ships the ability to hold strikecraft?
Most ships, i dont think all of them, but alot, have a section that lists the ships and their count for that ship, such as:
this is what it looks like with no fighters/bombers:
squadTypeEntityDef:0 ""
squadAntiMatterCost:0 0.000000
squadTypeEntityDef:1 ""
squadAntiMatterCost:1 0.000000
maxNumCommandPoints 0
or, like this for ships that do have fighters/bombers.
squadTypeEntityDef:0 "SquadPsiCombat"
squadAntiMatterCost:0 75.000000
squadTypeEntityDef:1 "SquadPsiBomber"
squadAntiMatterCost:1 125.000000
maxNumCommandPoints 5
This is for the Advent of course, but you can use TEC or Vasari fighters/bombers as well, and i even think you can give advent the tec fighters, and the tec the vasari, or whatever. 
Just make a mod, copy over the gameinfo folder from the reference data in the forge tools (download it if you dont already have it, and go to the mod folder :
c:\users\'computer name'\appdata\local\ironclad games\sins of a solar empire\mods
if you open the game and go to the area that asks if you want to see the folder path, it should create it for you, mine did, but im on vista, so i dont know if xp does that or not, and i think the path is different, like application data, instead of appdata.
But basically, after you get the copy of the gameinfo folder over open it, and find a frigate or capital, for whichever race you want, and right click and unselect the read only properties, and then open it, change the lines, and save it. 
I usually have the file open i want to change and a file that already has it. then i simply copy and paste. You can change the number of fighters as well.... so experiment and see what you like. Huge fleets of fighters of course eat up memory, but if you have enough, that is no big deal. Also, in the gameinfo folder down near the bottom of the folder is a line like:
SquadPsiBomber and SquadPsiCombat
or Tec, or Phase for the Vasari, if you set those to writable too, (uncheck the read only button) then you can change the creation time and scuttle and die without host times as well... creation set to 1 is nice and quick, if you want something more realistic, then leave it alone, or set it higher, but remember in battle when you need them quick, the longer time may be the difference between winning and losing.
Anyway, have fun and take care and keep modding!!
-T