I plan on doing a full wipe and load so because I'm a noob can I clarify a little? The way I see it:
1) Root
2) Download Rom Manager
3) Flash ClockworkMod 3.0 (Flash CWM using top option in Rom Manager. It'll probably be 5.0.2.0 or whatever is the newest version. You already get CWM as part of the root process. What you'd be doing here is potentially reflashing a newer version if there's one available.)
4) Flash hboot 0.92 from boot screen (or ClockworkMod Recovery) You probably already have 0.92.
5) Flash Radio from boot screen (or ClockworkMod Recovery) <= So you don't need to do this? Is there advantages to doing this?? Do NOT try to flash a radio from CWM. This is only done as a PB31IMG through hboot. SD card must be FAT32 formatted and file placed on root of SD card.
6) Wipe (starting from scratch, don't care about old apps) <= Do you do this in the ClockworkMod or Rom Manager?? (Either. RM is essentially a "skin" for CWM. Because of that, I prefer to do all flashing directly in CWM because you're going straight to the source. IMO that means fewer errors.
7) Flash ROM from ClockworkMod Recovery (If you wipe/load directly in CWM you can do all the necessary steps back to back..."wipe data (factory reset)", "wipe cache partition", "wipe dalvik cache" (under advanced menu). Then with the rom already on the SD card..."install zip from sd card", "choose zip from SD card", at this point it lets you browse the card and find the rom. Select and load it. Once done, the final step is "reboot to system". Done.
Edit: Also do you need Google Apps for this ROM to get the Market? Only if you are loading an AOSP rom such as CM7. Sense roms do not require this additional step as the market is included in the rom.