HardCorePawn: Any chance you can specify exactly which links you used to get the drivers etc?
I did a google search on 'vogue gps drivers'... and found a link on PPCGeeks (http://forum.ppcgeeks.com/showthread.php?t=25407)
However, after installing the .cab I found there that supposedly installed the drivers and the kickstart and making the reg changes you specified (FYI, I had no 'Multiplexer/MaxBufferSize' key???),
hi... yep thats the page i found the drivers.. i went for the drivers & the .exe rather than the cab file so no help there... oh sorry i didn't mention you will need to create the key
HKLM\SYSTEM\CurrentControlSet\GPS Intermediate Driver\Multiplexer\MaxBufferSize Value: 512