Halo: Combat Evolved (PC) $10

Deal:   Halo: Combat Evolved (PC) $10 at CircuitCity.com Click Here
  Discuss (2)       Posted 8:48 AM PDT 6/7/04 by Ben
In-store only. CircuitCity has Halo: Combat Evolved (PC) for $10. Not available online. It is supposedly a farily sucky port, requiring a fast PC to run smoothly. [Review : BizRate]

Does anyone know how different the PC version is from the XBox version?  Is it worth $10 if I already have the Xbox version?

Halo for xbox is the best game ever made. halo for PC is gay really gay. Its just a completly different game.