I have a simple range hood fan in a wall for ventilation. Rather then using a typical toggle switch I need a 2 speed switch that takes the place of a single pole regular switch. Know where I can get one?

My local hardware store has them. Radio Shack used to I don't know if they still do. What you want is an SPDT toggle switch with an off position.

A 2 speed ceiling fan pullchain will also work.