If the registry cleaning tool you used had a backup/restore function,
now's the time to use it - see if whatever it did can be reversed. Or try
using System Restore to go back to a time just before you unleashed this
registry tool.
Maybe approach wherever you got the PC from and see if they'll let you
have a Roxio CD now. (An unlikely route, but worth a shot.)
Check whether these DLL files are actually *missing* - DLLs are usually in
C:\Windows\System32 but may also be in your Roxio program directory. (You
may have to enable "all files" to be seen in Windows Explorer in order to
find them.) I don't see any reason why a *registry* cleaning tool should
remove DLL files.
Again, what makes you think it's these files in particular that are
missing? Are you getting an error message? If so, please quote it in full.
If they ARE missing, see if you've got copies of them somewhere else on
your PC - maybe search your dllcache folder in C:\Windows\system32\ or in
i386. (Or maybe even download them from a reliable source.) If you have
them, you might be able to put copies back in C:\Windows\system32.
Whichever way you might find them, you could try to register them:
Start > Run > regsvr32 c:\windows\system32\filename.dll
one by one, or
Start > Run > regsvr32 "c:\Program Files\Roxio
somethingorother\filename.dll"
or wherever the files are. (Note - if there are spaces in what you need to
put after "regsvr32", you will need to enclose it in quotes, as I have
above) This may well not work - who knows what else the registry "cleaner"
did to your system? Furthermore, you may have issues with different
versions of the DLLs floating around.
Alternatively, as it's just for light use and you don't seem to need all
the other functionality of your Roxio program, look for free CD copying
software:
http://www.snapfiles.com/Freeware/gmm/fwcdburn.html
or elsewhere.
Not entirely sure, but I don't think the McAfee log is anything to worry
about. It allowed the change - other people have had it blocked by
anti-malware programs and lost CD/DVD functionality (Google
"backupnocdburning").