i finally got 3rd strike to work. you need sfiii3.zip, sf33usa.bin (if it's not included in the zip file), and 33s000.chd. you need to make a folder called "sfiii3" and put the chd file in there. all of this should go in the roms folder. the reason why i was having problems was that i did not make a folder called "sfiii3" for the chd file. once i did this, it worked.