What is the best setup to play live through MIDI/Laptop and Software?

Question by Hawking71: What is the best setup to play live through MIDI/Laptop and Software?
I want to turn my keyboard and laptop into a rig I can play live with. Basically I need it to be able to play a variety of good patches (piano, strings, organ, pads) and some DJ type stuff, effects, scratching, beats etc... Im looking for the best way to do this and the software to do it with. I will list my equipment below:
Yamaha DX7 (which I will use only as a controller)
ASUS g73 i7 quadcore

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