I’m also running Vista x64 and facing the same issue. Point Grey has just released a new driver (1.8.1) that supports DirectX under Vista x64, but they only seem to work with native 64-bit apps. So, not very useful. I contacted PtGrey and requested 32-bit app support under x64. Maybe you could do the same and put some pressure, it could speed things up.
One other thing I’m willing to do is compiling Touchlib in 64 bits. That was the direction PtGrey gave me, they said it should work. But I’m not sure if it’s possible, because of all the dependencies and stuff. Do you have experience with compiling Touchlib?