first, three INSANELY useful links:
full stats, straight from the ncaa database (div1/div2):
Ranking Summary
Ranking Summary
most accurate individual rankings
2008 NFL Draft Scout, From Prep to Pro Coverage for Pros by Pros -- Powered by the Sports Xchange
most comprehensive mock aggregator
2008 NFL Mock Draft Database
3rd - trevor laws DT notre dame (114 tackles at DT last year)
5th - Darnell Terrell CB missouri
6th - keith brandon OT/OG northern iowa OR chris mcduffie OG clemson
7th - marcus monk 6'6" WR arkansas (had 962 yards junior year, surgery beginning of senior season... great blocker).
UDFA - brandon coutu K georgia
dexter jackson WR appalchian st (4.32 5'09") is another guy to watch in the 5-6 range, as well as darius reynaud WR west virginia 5'10" 4.47 in the 6th.
in the 3rd a guy like tom zbikowski SS notre dame could provide a good upgrade on teams and as a starter, though he'd still only be an average SS. dre moore (DT maryland) or brandon albert (OG virginia) would be good picks here too.