If he owns the game, that might be considered different, i know there was a halo CE mod with ripped H2 tags and they said not to download unless you owned H2.
Buuuuttt, i'm not really sure on how HaloMods deals with this kind of stuff, I've only been posting for like three days really, so if someone with some more expierience in the forums wouldn't mind giving this a bit of clarity, that'd be appreciated
man i havent modded halo trial in a while and im not even sure anymore, but i think it might work the same way u do 2 mod ce with hmt u use an hex editor 4 example 4 ce to pc ud have to find the string near the top that says 6102 and change it to 0700 and then the other 1 363039 to 353634, anyway i think it has something 2 do with the version as shown in the hex code.