There appears to be more info out there but still no less spendy solutions since I last searched. Do some searched using JTEC.
More reading:
http://thespeedfreaks.net/showthread...l-Or-PCM-Flash
http://www.jeepsunlimited.com/forums...d.php?t=474337
http://dodgeram.org/tech/repair/Pcm_diags/Page1.htm