Search the registry for Roxio, if you're not sure.
Read the post in the following link http://forums.support.roxio.com/index.php?showtopic=37322
I've used this tool in the past to cleanup Roxio 7.5 and Roxio 9
You still have to delete Roxio entries from the registry, if
you're comfortable with that.
Should be something like
I also had to remove Sonic in the same list, but I don't know if
you use Sonic for something else.
I do know that Roxio and Nero can conflict and perhaps Nero
doesn't like other burners, for all I know.
Daemon tools should be uninstalled - you can always reinstall later.
Sometimes the file dtscsi.sys is corrupted, apparently, although you should
get an errror message if this the case.
Filters and reinstalling drives: is this the article you looked at? http://support.microsoft.com/kb/314060
Can you insert your DVD, without the drive spinning up (hold down shift)?
If so, run Isobuster, which should show you if there is anything there
and allow you to recover it - it addresses the DVD without reference
Isobuster is shareware BUT the free functions allow you to
recover data, without having to buy the program. http://www.isobuster.com/isobusterdownload.php
Apologies, if you are aware of all this.