There is a couple of people around who hint loudly they can decompile a vlx etc so will never get rid of a hacker and for what reason ? How did they end up with your program ?
I still believe in the 99.999% rule "don't have a clue how to crack". What good is a duct program when I am CIVIL. I have got the phone call software is not working they were trying to install on a friends computer rather than pay, had a security check in code.
Back to protect and Kelv they are very old protection programs and easy to crack so would not go down that path, as I said old so you would need like a 10 year old pc, XP maybe to run. There is some run 32 bit program solutions but I have never had success. Kelvinator may be a 16bit program.
Unfortunately the LISP2C program had a quite death, was possibly a better way to go as it made C code from lisp, which could be compiled into say now .NET, an old 16bit-program.