Video Encoder 09 - recommended settings for FLV

I have an mp4 which I need to convert to flv for inclusion on a web site (not using YOUtube).  It's about 4 minutes long.

I was able to create an flv but it's 17MB... quite large.

What are the best settings to use to have good quality while conserving file size? Any tips on rendering?

Cheers,
Gilles