Kunta,
One thing you can do is check into Hosted Exchange packages - they are usually on the order of $30-$50 a month. I like Intermedia.net, because you get a free copy of Outlook with each mailbox.
You could also get by without Exchange altogether. See
http://slipstick.com/outlook/sharing...-the-internet/.
Hope this helps!
Mike Sperry
http://www.SperrySoftware.com
Find 37 Outlook add-ins that can make a difference!