OK, so it wasn't a speedstep issue. I saw on vmware site that disabling it was a solution for the error message i was getting. However i failed to perform a custom installation with the correct intel/sse patches and that was causing the hang. However, i'm still a bit miffed that i can't disable this feature and fix the cpu multiplier to 12, so if anybody can enlighten me i would still be v. grateful. Cheers all.