Does anyone here use Adobe Premiere? I'm using 6 and if anyone else is too, could you PLEASE tell me how to export a decent MPEG file?

I'll get this whole video edited and produced with transitions and what-not, and when I try to export to "movie" I get really bad quality results! I'm just trying to export to the highest quality MPEG I can so it can be re-encoded for VCD.

Thanks for your help!