hehe thats nearly as good as "esf wont work, help me now!"
ehm...which model did you download? if its a particular character, for example, Vegeta, simply drop the Vegeta.mdl into the vegeta character model folder. if its someone like...i dunno...mr.satan, and he is made to go over....krillin, for example. his file should still be named krillin, and drop it in the krillin folder.