Need lost activation code?

Purchased FRV 1-3 years ago (just can't remember) for my PC photo editing. PC crashed and a new motherboard was inserted. Of course, had to reload/reinstall many apps and programs, among with was FRV 2.0.9. Problem is that although I have installed a working FRV, it is only a trial version which is up in 18 days. How do I recover my purchased activation code so that I can get FRV back on board? Thanks.