probably the easiest android to flash that I've owned, and I've owned a few..
e: Its as easy as
Download Odin and CFRoot.zip from
http://forum.xda-developers.com/showthread.php?t=1695238
Load Odin and select the zip under PDA
Reboot your phone into download mode via volume down + home + power
click start in odin and wait for it to install root and CMW recovery
From there it's as easy as putting whatever ROM zip onto your phone internal SD card and select 'flash zip' in CMW recovery and sit back and enjoy.
ee: Or you can even download the toolkit that some guy built from
http://forum.xda-developers.com/showthread.php?t=1703488 and follow the most simplest of instructions that you're likely to find.