If it's like the one I have (Motorola Moxie), no, you can't set it to record just a portion of the show. You can tell it to begin early or end late, but only by 2 or 3 minutes.
When you're playing it back, just stop watching and fast-forward the recorded parts you're not interest in.
Clear your browser's history and/or delete all your cookies.
And get rid of AOL -- it's sucked forever. Use another browser or switch to something like MSN or anybody but AOL.
Mainly because back in the old days, when people like you and me who stood up and asked "what's with all the contradictions?", we were burned at the stake. These days, you got people like Pat Robertson telling us we're all going to hell because we're heathens.
I think ol' Pat will be there...