We are talking about W2K, aren't we?
Cause 5.13 is the only one that works for me, but I had to set my V770nU to 2X, but results in no crashes or lock-ups. With the new Det2, I've set the card to 4X (fast-write disabled) but it still won't allow me to go higher than 1024x768 or it'll freeze for sure, other than that no problems. Although DXDIAG reports no AGP support.
P3V4X (+ VIA4in1422 + AGP403)
PIII533EB, 256Mb PC133
V770nU, SBLIVE, A-2940U2W, W2K