How to unpack delphi ???

I have indeed unpacked regtoolkit but if i read it correct then you say this is not the one to crack .
Must i unpack all the others to exe files too crack this proggie ??? or is there only one file that will do the trick.
I thought that the regtoolkit whas the importent 1 because it whas the main program.
Hmmm so you see that everytime you learn something.

Thanks in advance.

ysco.