Woohoo!  Thank you, Nightbird and PS47!  That did it.    
My boy thanks you as well since he gets my old PC, lol!

Thanks again!

Offshoot

Thanks, Enthomologist & PS47

The V2 cards work fine in SLI on my Win98 machine, so the connector cable is not an issue.  Both cards are detected & operating properly in PCI slots 4 & 5 on my XP box.  They just won't connect in SLI or support higher resolutions.

Here's a possible clue: RedBaron 3D is the only Glide game I run in XP.  When I start the game, I get an Error message: " A Glide card was detected, but it is using old drivers.  You may need newer drivers for Red Baron 3D to function properly.  (Contact your 3D card manufacturer for updated drivers)"

Is there a later Glide.dll version I should install?

Thanks for the help!

Offshoot

Hi!
I am trying to setup two Diamond Monster3dII 12-Meg Voodoo2 cards on my WinXP PC, but cannot get them to run in SLI or at a resolution above 640x480.  

I downloaded the FastVoodoo2_4.0_XP_Gold_Edition and successfully installed the cards and drivers.  The cards are recognized in Device Manager with the correct drivers installed.  I copied the Voodoo2_OC folder to the Windows\System32 folder and ran the .exe successfully.

When I went to the 3dfx display settings, I could set the resolution no higher than 800x600.  However, it would not save that setting and would always go back to 640x480 when I exited the setup screen.  SLI is not detected in System Info.

I ran the registry patches for Fifa_2001 SLI and Fifa_2002 SLI with no results.  I added a SSTV2_SWAPBOARDS (value 1) string to the HKEY_LOCAL_MACHINE\SOFTWARE\3Dfx Interactive\Voodoo2\Glide registry.

I am running WinXP SP1 on a 3.2G P4, 1G RAM, 6800GT graphics card, and an Audigy 2 ZS sound card.

Any help in getting my V2's to run in SLI at 1024x768 would be greatly appreciated!

Thanks!

LWulffe_Offshoot