BIG problem with my copy of Soul Calibur....please read!

[sconer]

last night i downloaded soul calibur......it was a winzip file so i extracted that, then it was a cdi file, and then i converted it to nero, because nero works better on my computer then nero. now i did this and burned it on a cd. i put it in my dreamcast and the game looks like it has horrible tracking. the screen goes up and down, kinda like when your vcr is out of tracking. now the game runs fine, but its still unplayable. has anyone had this problem?? please dont say i downloaded 500MB for nothing