> I have tried Importing but it doesn't seem to work

I guess that means that without a backup of the old email folders they're probably gone for good. Digging around (looking at modify dates on the files) in c:\program files\netscape might turn up something you can rescue...

One trick I have used is to install another email tool (say Eudora) and using it to import the folders. Then you ask Netscape to import back from Eudora. It works because the importers assume less about other programs file formats and locations than they do about their own.

Chris