I had a problem with my DVD drive. The system would not recognize it after
ripping a CD into iTunes. I took the laptop to the Geek Squad and they ran a
utility that reset some kind of registry hook that some programs install when
they use the DVD drive. I am trying to find that utility so I don't have to
go back to the Geek Squad again even though they were very gracious and did
not charge me for the assist. Does anyone know where I can get this?

Nothing like a "late" response... If anyone happens to read this thread, I have had problems with Vista Home Premium not recognizing my DVD/RW drive. I had searched the net for help by reading many forums, and I found a successful fix!
My computer is 2 months new, dual core, 350gb h/d 3 gb RAM yadda, yadda, yadda... a nice Gateway. Anyway, I bought and installed Print Shop 22, searches yielded unfortunate results... They said the program was not compatible with Vista. I decided to try anyway, at the end of the install, the program stated that the program was incompatible with Vista.... I continued.
The program has run fine with zero problems, BUT, after install, my computer will not recognize my DVD/RW! I restored back to a point before loading the Print Shop 22 software. Viola! My DVD drive is back up... I reloaded the Print Shop 22 software and 48 hours later the DVD is not recognized again. Okay long story, short... The fix is, open up regedit, find...
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
Open it and find the line the specifies an "upper filter" and/or "lower filter" and delete them! reboot and see what comes of it... It worked for me and still does, good luck!

THANK YOU!

I've been searching for weeks for a fix. My ASUS DVD-ROM drive works fine in XP 64bit, but Vista 32bit would not recognize it. Editing the registry as you described, (and rebooting) allowed Vista to recognize my DVD drive.