I have the wusb54gc_v1 which uses the rt73.sys driver and included it in the actual Ralink driver from Ralink. It is driver version 1.3.2.0 for Windows XP and 2k and available from Ralink website as of 11/11/2008. It has the DeviceID USB\VID_13B1&PID_0020. I was able to use ISCab and update all the *.inf and *.ini files to include the WUSB54GC_v1.
Let me answer "Fine, but..."
... modifying the *.inf file invalidates the digital signature. Ralink Tech. is going generic with some of their drivers. I think thats the right way to go. So the rt73.sys version 10/21/2008, 1.03.02.0000 now supports devices of 25 OEM manufacturers:
...
[Manufacturer]
%Ralink% = Ralink
%Qcom% = Qcom
%Gigabyte% = Gigabyte
%Conceptronic% = Conceptronic
%Surecom% = Surecom
%Asus% = ASUS
%Amit% = AMIT
%CNet% = CNet
%Huawei-3Com% = Huawei-3Com
%Askey% = Askey
%HP% = HP
%Buffalo% = Buffalo
%ZyXEL% = ZyXEL
%Sitecom% = Sitecom
%Netopia% = Netopia
%Philips% = Philips
%Zcom% = Zcom
%AboCom% = AboCom
%EnGenius% = EnGenius
%Edimax% = Edimax
%AL% = AL
%Planex% = Planex
%Samsung% = Samsung
%Billionton% = Billionton
%D-Link% = D-Link
...
This support requirers some cooperation between the chipset vendor (Ralink) and the OEM vendors. As you can see LinkSys is not on the list. Whoever is responsible for that, I do not intend to make his work.
So I included in the last Beta Driverpack WLAN this Ralink driver and the WUSB54GCv1 driver, version 01/12/2006, 1.00.04.0000, that also has a digital signature.
Mwvonlehe, I'll send you an email with the link zu this Beta driverpack. Please test and report back if it works for you.
I also have the Linksys WMP54G_v4.1 which uses the rt61.sys driver for XP and 2k and included it in the actual Ralink driver from Ralink. It is driver version 1.2.6.0 and has the device ID of PCI\VEN_1814&DEV_0301&SUBSYS_00551737.
I will have a look on this soon.