??? you can't fall back? try uninstall your drivers completely, either yourself or detonator destroyer. revert to the regular vga driver. than try reinstalling your detonators. if you follow that process there should be no reason the dets should be working. if they don't its probably not a detonator problem, but a xp problem, your system could be hosed, and what not.
Athlon XP 1.58GHz | MSI KT3 Ultra2 | 256MB DDR PC-3000 | GeForce 4 ti4200 64mb @ 310/533 | IBM 120GXP 40.0GB | Det. 41.09 | DX 9 RC2 | Win XP SP1