Install AviSynth and make a new AVS file (it opens up like a text editor, like with Notepad):
To add subtitles, copy and paste this script:
subsStart=60
subsDura=300
subtitle("Game Name", first_frame=SubsStart, last_frame=SubsStart+SubsDura, y=height-18*2, size=18, text_color=$ffffff, align=2)
subtitle("Played By XXXX", first_frame=SubsStart, last_frame=SubsStart+SubsDura+5, y=height-18 , size=18, text_color=$ffffff, align=2)
subtitle("www.LONGPLAYS.ORG", first_frame=SubsStart, last_frame=SubsStart+SubsDura+10, y=height, size=18, text_color=$ffff00, align=2)
I...don't think this is in the support forum. That thread has to be spruced up.
You don't use Windows Movie maker for the final file. It will mess up the quality. =P
As for Framerate: I...don't think there is a way. *shrugs* The longplays on Youtube are 25FPS or whatever is because YouTube stream stuff or whatever at 30FPS max (as well as lowering the quality and what-not of videos.).
When in doubt of anything, come to the IRC. We won't bite. Well, I will. :3