is your OFT connection to your computer securely plugged in? and you do not need to have all the slots filled in order to upload the roms.
as for setting up the LC, just download the whole ROM pack from the Open Flash website. open up RomRaider and apply the OFT definitions that you need (D00C in your case and they should be .xml files). once the definitions are applied, then open up the D00C .bin file and you should have LC values. remember that the LC value is not what your want your LC RPM value at, but rather how much value to subtract from redline. so if you have a value of 3000 set in the box, the actual LC RPM will be 4500 (assuming a 7500 redline - 3000 value). LC will also not work if you're rolling at speeds past 5 MPH I believe, or something similar to that.
as for guides, just follow Wayno's:
http://www.ft86club.com/forums/showthread.php?t=94822 since it basically has everything you will need to know.