no http files to share windows server 2000

I can access the server inside the network. But when I try to access the share files on the windows 2000 server through the VPN the follow message appears:
HTTP shares
There are no shares available.

I get the same message when I attempt to access the file using explorer inside the network.

You'd better to make the old windows 2000 file server and the new windows 2003 file server as the member server within a domain.

1. You may install File Server Migration Tool on the new file server.
   
   
2. Launch the File Server Migration Wizard.
   
   
3. Create a new migration project and save it in "C:\FileServerMigration"
   
   
4. When you add source file server, please input hostname (inputting IP address of server is not supported)
   
   
5. Please unselect the checkbox of "Resolve invalid Security descriptors" and select the checkbox of "Copy security settings"
   
   
6. You may find that all the files and folders with Share and Security permission have been replicated to the target server.
   
   
7. Since the Security descriptors (users and groups) are stored in Active Directory Database, all the folders and files can be accessible as normally.
   
   
8. Please remove old file server and rename new file server to the old servers name.

Please note: you may perform the migration in the spare time since this migration can be transplant to the clients.

sorry, I think you answered the wrong question.

Are you trying to access the server from a Windows 98 client? If yes, then read this http://support.microsoft.com/kb/826728

If not then have you tried the Windows network troubleshooter?

Go to Help and Support > Networking and the Web > Fixing Network or Web Problems > File and Printer Troubleshooter. Now select I can’t connect to a specific computer on the network and go from there.

If this doesn’t solve your problem, check some of the other options in the troubleshooter.