I've got the first two seasons on DVD, the third season taped from TV and wondered if anyone could help me out in getting the fourth and fifth seasons?

I do plan to get all of them when/if they are officially released but would like to have them just now

I wish Paramount would give us a timeframe. I think the show lost some of it's spark after Bobby left at the end of season 3, but 4 and 5 were still good seasons.