Check in C:\flexlm for a license.dat file, or it can be also located in C:\Program Files\Freescale\CW for HC12 V4.6. You should already have a license.dat file somewhere, because even the Special Edition CodeWarrior requires a license.dat file to function. If it's in an oddball directory, move it to the either of the directories that I've mentioned.
If you can see the dongle ID, then you want to use it to authorize your existing software. Start the IDE, and go to Help | License Authorization... then enter the dongle ID number there. Be sure to consult the sequence of steps in the forum thread I pointed you to before attempting this. You might also want to give the license folks a holler at
[email protected] before starting to see that you have everything.
---Tom