ok, so. I have a nintendo 64 controller and a USB controller, that is somewhat similar to a PSX controller, and i was wondering how i could possibly make the N64 controller usuable through my USB port.

Any ideas?
I'm pretty sure that even if you grafted the cords so that your N64 controller ended with a USB port, it wouldn't work. I have a feeling that the signal wouldn't send through the USB, not to mention that it probably wouldn't work with a computer if you could connect it.

Just get an Xbox 360 controller instead.