OK, funny this but after months of searching and eventually posting here and asking I have resolved the issue!
Turns out that there have been no successes with an nforce driver but a third party driver in the form of Realtek one does the job would you believe?
Here is the driver: Realtek RTL8101E network driver ver 7.06
Here is the
link
I supply this for anyone else who might be having trouble finding this a driver for their nforce network controller.
Hope it helps!