I do it just like in sony vegas 9:
Sony AVC/MVC
-> Internet 1280x720-30p
videoformat depends on you I choose AVC
Framesize High-Definition (1280x720)
profil Baseline
Framerate 29,97 (NTSC)
Progressive Scan
pixelratio 1.0000
Bitrate 8,000,000

that's just what I have though I'm not sure if you understand it correctly. if not just ask me