wow, did you do something to yours?  yours has a lot fewer options. i'm running 2.49b, too, and i have a whole slew of import options you don't.  and afaik,  i've always had more than that, even going back to 2.43 and on the Mac.  i don't think i ever had a list that short.  on mine, OBJ is after the Nendo and NetImmerse options you don't have and before the OpenFlight option you do have.  you don't seem to have Poser .cr2 import, either.  which doesn't seem to work very well, by the way.