How do I stream flash video....what type of server?

I have never tried to stream in flash video, I always did the basic progressive download.

What type of server do I need to have to stream flash video? Do I have to use that flash comm server thing? Or will a basic streaming server do just fine?

Also…when I compress the videos in sorenson squeeze, what considerations should I keep in mind when it comes to streaming. In other words, …why can’t I create flv’s with the highest quality,…and subsequently big file sizes, and then stream them?

Thanks for the help.