To everyone still looking for a solution, this is how I solved the problem.
When I had created my Unibeast USB key, I had created it using OSX Lion 10.7 build. Upon doing research both on Tonymacx86 and other websites, I read in multiple threads that Lion 10.7 disk utility has trouble at times finding certain drives, more specifically SSD's. So what I did is I rebuilt the Unibeast USB key using Lion 10.7.4 and voila - found my drive in the disk utility.
Hope this helps someone out there, cheers.
btw ~ Crucial 128gb SSD
EDIT: Yes, I meant 10.7.4 (dyslexia wins again)