DBF Connection from Win2k Server Web site to Windows Small Business Server 2003 over VPN

I am having difficulty connecting from an asp web site (web server on win2k server) through an automatically established VPN to an Windows 2003 Small business server share into a folder containing the dbf

I get lots of wonderfull errors.  

Microsoft OLE DB Provider for ODBC Drivers error '80004005'

[Microsoft][ODBC dBase Driver]General error Unable to open registry key 'Temporary (volatile) Jet DSN for process 0x9dc Thread 0x488 DBC 0x38771bc Xbase'.

with the asp coding for above is simply
  Set whConn = CreateObject("ADODB.Connection")
  whConn.Open "Driver={Microsoft dBASE Driver (*.dbf)};" & _
                       "Dbq=f:\testwhdb"

(the f:\testwhdb is the already established VPN network share into the remote machine)



OR errors like

Microsoft JET Database Engine error '80004005'

'\\SERVERNAME\testwhdb\whprods.dbf' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides.

with asp simply
 whconn.open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\boss\testwhdb\whprods.dbf"

OR errors like
Microsoft OLE DB Provider for ODBC Drivers error '80004005'

[Microsoft][ODBC dBase Driver]General error Unable to open registry key 'Temporary (volatile) Jet DSN for process 0x9dc Thread 0x880 DBC 0x387bc24 Xbase'.
 
with asp as
 whconn.open "Driver={Microsoft dBASE Driver (*.dbf)};'Dbq=\\boss\testwhdb;"


I am confused

I have looked for things like permissions using IUSR_machine name in the remote machine but still no joy...
The vpn will allow any ports, so nothing is blocked...

Any help would be brilliant

Thanks in advance

Steven