Don't worry about odexed/deodexed just get the full SBF file, then:
1) install drivers and rsd (there's a newer version of rsd in my signature too)
2) get the phone into bootloader mode by powering it off completely, then hold the up key on the physical keyboard when powering on
3) once in bootloader mode, connect to the pc and start rsd
4) select the sbf file in rsd
5) click start and wait for it to reboot
it might not get to 100% before it reboots. I've had it get stuck at 99%, but that doesn't necessarily mean that something went wrong. When it boots:
1) wait until the M shows, pull the battery
2) put the battery back in and boot it up while holding the x key on the keyboard to get into stock recovery
3) when you see the android with the ! press the search button on the keyboard (Pretty sure it's search for Froyo, if search doesn't work, press BOTH volume buttons simultaneously)
4) once in recovery, select "wipe data/factory reset"
5) reboot
At this point you should be at a complete factory state. I did this all from memory, so some things may vary slightly, but all the necessary information should be here. If you need more help, feel free to stop back here in the forums, and feel free to PM me if needed.