Here just for future Reference, if you are able to get root/s-0ff.....here is a good path to follow
(either the side loading or no side loading one, it wont matter since you plan on flashing a custom rom)
-Rename the zip to PD98IMG.zip (it has to be named exactly that)
-place it in the root of your SD card
-reboot to hboot (power volume down)
-dont press anything, it will find the zip, after 3 attempts and ask you if you want to update, volume up to update.
This rom will give you the newest updated radio and OTA updates...that way you have the fast download speeds.
Then download rom manager from the market, go into rom manager and flash clockworkmod recovery...reboot your phone (optional, but I've found it helps)...go back into rom manger and reboot into recovery....From there you can (wipe data/facory reset, wipe cache, dalvik cache, and start flashing your android revolution rom.
Definitely not the only path to follow, but its a nice safe one that will get you what you need. Hope this helps, and Good luck
HTC Inspire 4G
Rom: ClearDroid 1.3.2