[I misinterpreted your question. Ignore this post and see second post below.]
For departments that may allow the GRECS to waive CS course prerequites:
Distance Learning Directory - Computer Science > GRE Subject Test for Computer Science
(Regarding the University of Central Florida listed above, it seems 50th percentile
may be enough for MS admission based on my e-mail reply from them from over a year ago, depending on how competitive the other applicants are for a given year.)
A related discussion:
http://www.urch.com/forums/gre-compu...tml#post602800