Everyone else's advice seems solid, the one piece I can give you is make sure your stuff is fully textured and finished when put in a portfolio. High-poly models without textures on any of them on a portfolio gives off a feeling of a lack of understanding of a certain aspect like texturing or the ability to finish a…
Saw this in the Lightwave newsletter, it looks cool, but seems quite specific and situational. Looks to be aimed more at the movie industry than games.