Ok, no one has answered. WOW.

I will consider installing an old sound card with the DA15 gameport. Will this conflict with my onboard sound?

NZXT Zero Full Tower
Gygabyte GA-M59SLI-S5
NVIDIA 8800 GTX
4 GIG CORSAIR XMS2 DDR2
AMD ATHLON 64 X2 6000+