Well, something strange kept me from doing it. I was definately doing a custom install and I tried to put it into just about any directory name I could think of. I tried program files, program files(x86) and lots of other things. I know I was pointing it right because it would always install a font file and an html file on the ssd drive and then switch back to the hard drive. I tried it as administrator, I disabled user account control, and who knows what else. I finally gave up and let it install to C: and then moved the whole directory to the SSD drive. Ran a registry fix to point things to the right location and it's now working fine. I'm just still scratching my head.