Comcast Business Class Exchange

[TailorMadeAV]

So, I set up my e-mail address through my Comcast Business Class account.  Besides my internet access, it gives me e-mail boxes on an Exchange server hosted by Comcast.  The problem is, they do not have a Blackberry Enterprise Server.  What would my soluton be to get my Blackberry synced?  Can I put BESX on a machine in my office and do it that way, or is BESX supposed to be in the same machine as Exchange?  Help!