I think rvashi pretty much nailed it all, however if you ever do have to revert to stock make sure to read all the info! You'll need to revert to stock ROM and Radio. I've never done it on my Rhodium but on my Raphael it was quite easy... I assume its no different on Rhodium!
Just read the stickies and check out the wiki! I made sure I'd read through the procedure thoroughly prior to starting and had no issues! Of course I've been flashing ROMs starting with the Kaiser and not much has changed from that device procedure wise!
My HTC Devices:
HTC Passion (Google Nexus One) - Nice screen!
Current ROM: eViL's NXSense v1.26 (My dad uses it now)
B]Galaxy Tab 10.1[/B]
HTC Pyramid (HTC Sensation 4G) - Blazing fast, understatement
Last ROM: Virtuous Quattro (Latest)
HTC Flyer - HTC on the Big Screen!
Last ROM: FlyHoney ROM v0.2
HTC Ace (HTC Inspire 4G) - Left AT&T!
HTC Rhodium (AT&T Tilt 2)
HTC Raphael (AT&T FUZE)
HTC Kaiser (AT&T Tilt)