Never tried it on a TNT2, that's getting non-mainstream these days.
My Athlon system isn't up, I have a useless !#$! Asus A7M266 DDR board sitting here because it won't allow multiplier selection.
Anyway, my two systems that are running Win2K/DX8 perfectly, and get about 7100 & 6400 3DMarks, respectively, are:
System 1:
Asus CUSL2, P3/866 @ 932, Alpha PAL6035
CoolerMaster ATCS-200
256MB Mushkin Infineon Rev2 CAS2
Hercules 3D Prophet II GeForce2 Ultra, Sony GDM-F500
Adaptec 2940U2W, 2x 10K RPM Ultra2 SCSI 18.2GB
Plextor UltraPlex 40Max, Yamaha 6416 CDRW
Intel PRO/100 NIC, SB Live! Full Original
System 2:
Abit VP6, dual P3/866 @ 936, Alpha PAL6035s
In-Win Q700
512MB Infineon CAS2
Hercules 3D Prophet II GeForce2 64MB, Iiyama Pro 510
HPT370 onboard RAID, 2x IBM 75GXP RAID 0
Kenwood 72X
Intel PRO/100 NIC, Hercules Game Theater XP