If you're talking about the Special Forces software then you must have a very old version (5+ years). Do you still have the user manual? If so, the key should be around page 4. If you do not, then do you know what version your kit is (v10, v14, v23, etc...)? Also, do you have the gas kit or diesel kit?
Director of Sales & Marketing Technical Support 407.321.5725 www.DeltaForceTuning.com