Looks like more reading is in store...
These will walk you through what you need to know. FYI they are stickies at the top of the Titan Forum.
Titan Flashing for Dummies - a very basic guide
http://forum.ppcgeeks.com/showthread.php?t=9927
Hard-SPL - Flashing ROMs - Titan Unlocker
http://forum.ppcgeeks.com/showthread.php?t=9093
Oh Rvashi, i see you already posted the unlocker...