is not especially dangerous, as long as you are careful and don't delete or update the wrong things.
It's nice to know that Windows 98 keeps a 5 day buffer (the status of the registry on the first boot of every new day) of old registries. So in the unlucky case you mess it up, you can go back to the correct version of this morning. To do so, boot into MS-DOS, type scanreg /restore (followed by enter) and choose the right date.
nwnblink.vxd seems to be related to Microsoft networking. I doubt if it will have any influence on sound. And even on AOL.
Hope this helps you to dare to do it,
and hope it helps to solve your problem. And if not, tell more on your problem and the proposed solution.
Every time I restart Windows 98 Second Edition the following message appears:
Cannot find device file that may be needed to run windows or a windows application.
The windows registry or SYSTEM.INI file refers to this device file but the file no longer exists.
If you deleted this file on purpose, try uninstalling the associated application using its uninstall or setup program.
If you still want to use the application associated with this device file, try reinstalling that application to replace the missing file.
Press a key to continue
I don't know why this message began appearing, however, I now have no sound capabilities, and can no longer use AOL Instant Messaging. I found information on how to correct the problem by searching the knowledge base of Microsoft, however, it warns that editing the registry (which is required) may do damage to my system, therefore, I am hesitant to attempt to repair the problem per their instructions.
Could someone with advanced knowledge regarding this issue please advise me on how to proceed?