Missing registry files

Need some help please…I was cleaning out cyberlink files out of my registry and was going too fast to notice that I was deleting two files required by windows XP to play DVD audio. Reg is not backed up. Is there anyway I can recover these files without reinstalling? Is there anyway someone can send me the keys? There are two of them and they are named DVDaudio something. My email address is up to date on this site or the key can be posted in the reply.

Thank you