Re: help somebody.....
I use Cadence with the 0.35um AMS process, I'm quite sure they use the BSIM 3 model. One of my colleagues uses winspice with the BSIM models. Pretty much any SPICE simulator will run the BSIM models.
Several months back I had a check on what models Orcad was was using, and the BSIM ones were there somewhere, I can't remember what they were called, level 7 or level 9 I think.
Spending 15 minutes on google should be able to clear this up.
If I was you I would pick the simulator you like best, then find out which 'level' is the BSIM model.