The Mac they are giving away is the Mac model I have. For those of you who are interested in this contest, The standard specs are...
-2.4 Ghz Intel Core 2 Duo
-1GB Memory (I have 2GB)
-320GB Hard Drive (I have a 500GB)
-Slot Loading DVD+/-RW Drive
-20 inch LCD Monitor
-Built in Web cam
-ATI Radeon 2600 PRO GT Graphic Card with 256MB memory
-Firewire (IEEE 1394) 1 400Mb port and 1 800Mb port
-3 USB Ports (2 more on the keyboard)
-Built in Speakers
-Gigabit Ethernet
-Built in Wireless (802.11n)
-Apple Remote
-Mac OS X 10.5 Leopard
-iLife 08 preinstalled
-Compatible with Windows XP SP2 and Vista
More info at
http://www.apple.com/imac/