Just to update I pasted the S23dfx.exe patch from Phil's site as well and still getting the same error. Do I need to fresh install the game and NOT install the normal patch and only the 3dfx one? I am just not sure if the 3dfx patch alone will contain the updated game from this other patch as well.

I resorted to trying to replace Dos4GW with DOS32 after reading some things online and While I get farther I still get illegal operations and protection faults I believe they were. I am just having no luck.

Still messing around and NOTHING seems to fix the problem. the exact text of the error is as follows" DOS/4GW error (2002): Transfer Stack Overflow on Interrupt 00H at 97:000074c8

Hopefully someone chimes in. Just want to say that even trying to launch the normal version of the game in software mode gives the same error. So I don't think it's voodoo related.

I doubt anyone is following, but I just installed on my Tualatin 440BX build and get the exact same error with no patches on a clean install.

Dos32a on the Tualatin machines gives a similar error of 6001 exception INT 0DH general protection fault at 00D7:84393E8B

Update! Booted off a Win 98 floppy and have working sound. Game launches if I use the s2_3dfx.exe and demo runs perfect but the menu renders at like 1/2 and FPS making it unusable. Do I need to do something specific for the banshee?

Hi. Have you actually managed to get your copy of the game running in standard, software mode on any of the systems you've tried?
I'd start with that first and then work my way on getting 3Dfx support to run. Perhaps there's some other issue with your copy of the game or the systems you have tried are either not configured in a way that this game approves or perhaps there's some hardware failure such as bad RAM sticks.
If you've solved the above, there are a couple of ideas I have in mind:

a) Banshee may be incompatible or quirky when running this game. In general 3Dfx patches for DOS games were targeted towards the original Voodoo Graphics, with different patches for Voodoo Rush and Voodoo 2 released in some occasions. Voodoo 2 is still similar enough to the original card to work with most DOS 3Dfx games using some variables run through a batch file. Starting with Banshee and Voodoo3 things start to fall apart.

b) The game may run properly on Banshee, but perhaps is having difficulty finding glide2x.ovl or the .ovl file it is trying to use is incompatible with Banshee. You can usually fix this by copying (& replacing if it already exists) the glide2x.ovl from your driver package directly into the game's folder. This is essential as, AFAIR, it contains all the libraries that Glide expects to interface with the card.