I'm looking into buying my first track bike, got it down to a few options:

Dawes SST: https://www.bikesdirect.com/products/dawes/sst.htm
Windsor ClockWork: https://www.bikesdirect.com/products/.../clockwork.htm

My question is, how do these bikes come...fixie, freewheel, or both?? My friends and I have debated, can't come to conclusion. Answers appreciated, thanks.

They both have flip flop hubs however both bikes come with only the freewheel and not a fixed cog which you need to buy seperately.

ok cool, thanks atra. what do i need to buy to make that thing fixed??

You need a fixed cog and a lock ring and tools to install it if you plan on doing it yourself. If you are planning to make it fixed why not buy a fixed from BD in the first place or buy the Messenger as it comes with both cogs?