Using mods with Steam

Does anyone know how easy it is to take these existing mods and use them if you buy the game from Steam? I am thinking about buying the game on Steam (have a gift card), but I'm not going to buy it if I can't get the logos and courts to work (really interested in the Light mod). I've gone into the Steamapps section to fiddle with things in other games so if it is going to install the relevant directories and such, I can just copy the files over after they install (have the demo so those default folders already exist). Thanks for the help.
P.S. Someone really needs to hype up the fact that there are mods for all the WS games because a lot of the negative reviews mention not being able to use real team names and logos. You'd probably get more sales if that was more wildly known.
P.S. Someone really needs to hype up the fact that there are mods for all the WS games because a lot of the negative reviews mention not being able to use real team names and logos. You'd probably get more sales if that was more wildly known.