16:9 HDV to 4:3 or 3:2 FLV

I need a workflow to be able to go from an edited 16:9 HDV timeline in FCP to a 3:2 or 4:3 FLV file for embedding in a website. My 16:9 HDV was shot with a wide angle lens and has some shading in the corners of the frame, so I need to crop the sides off and keep the middle, hence the 3:2 or 4:3 output. I would like to keep the Hi-def if possible but if I must drop the HD timeline into an SD timeline and then scale it so be it. I'm looking for the best possible video quality I can get with a 512 kbps FLV output. Can anyone please help me, I am under a lot of pressure to get this out. Thanks.

I use a iMac G5 2.1 GHZ w/2.5 GB ram, and Final Cut Pro 5.4. I also have Sorenson Squeeze 4.5.


John Huff
Lake Oconee Video Editing and Production
Eatonton, Georgia