Optical drives dissapear after system sleeps

I did a search on this issue and found a mention of it on the Windows
Support site which mentions a hot fix, which I did by calling MS and
haveing them email me a file to install on my system. I also did the
registry tweak also mentioned on the MS support site. Neither of
these "fixes" work. After a reboot my optical drives are recognized
by the OS and work fine...it's just after the system sleeps that the
are not in "my computer" or my "device manager".

Please help if you can!!

Thanks!

Eddie G