Netscape 4.x –> 7.x

Who knows Netscape mail 4.x and 7.x

My CEO upgraded his wife?s LT and desktop wks to Netscape 7.?. All email, folders etc were ?lost?. I PCAW into the desktop, and see the directory that the old version of Netscape used for folders etc, and messed with it a little, moved the contents to the location where the new version stores such things, but nothing yet.

So the problem, how do you move the contents of Netscape mail client to ver 7.x?