Clutch "Drag"/"Binding"

[zap26]

I am using an 901/05 transmission a street car. It came from a running car but the previous owner was not sure if it was stock from the car.
I have it all set up and installed but have found that when I push the clutch down all the way and then start the car the clutch still engages the transmission, and it wants to roll or spin the wheels. I looked it up a bit and found its considered "dragging" or "binding", but have not found any solutions to correct this problem. Any ideas would greatly be appreciated, thanks again for your time and knowledge