My old computer crashed. Do I upgrade or buy new programs?

[Songbird]

I bought Karaoke Suite #4 several years ago. My old computer crashed due to a virus. I bought a new computer and can't re-install Karaoke Suite because I do not remember the registration number. My versions of Microstudio, Vogone, Karaoke Pro and Keyrite are very old anyway. I see it is much cheaper to upgrade from a prior version BUT since I do not have my old versions on my new computer, and can't get them off my old "crashed" computer I'm not sure if I can upgrade. It costs a lot more to buy the KPro Suite and I really don't have the money!
I tried using the Emergency Help Ticket and it wouldn't go thru because:
~~My registration email is no longer in effect
~~My installed program is not listed (KSuite4)
~~I don't remember my installed registration code
I'm not sure how to proceed. Any help would be appreciated!