For Internet Explorer the file is a folder called "Favorites".
For 95/98 it was C:\windows\favorites.
For W2000/XP, the favorites folder is kept separately for each user, and is in:
c:\Documents and Settings\user name\Favorites.
If you copied your entire hard drive to a directory on the new one, you should be able to track down the folder. I am not sure if Netscape saves to the same place. Some of the Old versions of Netscape saved internally and were the devil to get out.