I tried to do it on my XP Desktop, as recommended, and it kept failing with "Cannot get system info correctly. Run RmDrv and try again", which I tried.
Funny thing was that in the list of Adapter Cards it presents for selection it offers "HP EN1207D-TX PCI 10/100 Fast Ethernet Adapter" yet in my XP's Device Manager it is called "Intel(R) PRO/100 VE Network Connection". Both have entries in the Registry.
So I tried on my Vista Laptop, where the Ethernet card is identified the same in both places, but that also failed in same way.
I also tried various versions of the generic Netgear firmware in case it doesn't work with the latest.
I am only trying this out of interest as I happened to acquire one of these Sky routers, which is identified as a DG834GT in its Router Status.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC