How do I convert from a gas dryer 120V hook-up to an electric dryer 240V hook-up?
You'll have to run completely new wire (size 10/3 copper) from a 30amp double-pole breaker and install a new type of receptacle at the machine. It can be done yourself if you have some wiring experience. If not, leave it to a pro. The most important part is using the correct size wire and breaker.