Possible Duplicate:
Can the new MacBook / MacBook Pro Support Dual EXTERNAL Monitors
I think having three screens would be cool =)
Possible Duplicate:
Can the new MacBook / MacBook Pro Support Dual EXTERNAL Monitors
I think having three screens would be cool =)
DisplayPort v1.2 is digital, and supports daisy-chaining as well as packet switching. With the new specification, you will be able to daisy-chain up to 4 1920x1200 monitors with one DisplayPort output. Whether your MacBook Pro (or the mini-DisplayPort to DisplayPort adaptor) will support the v1.2 spec is a different question.
Matrox makes an adapter that allows for two external monitors (note: it comes in DisplayPort, digital, and analog flavors).
Here's another approach, although you won't get quite the same image quality: the Kensington Universal Multi-Display Adapter. It's currently going for $66 on Amazon. It allows you to run a 3rd display via USB versus splitting your video output.
There are other companies that have similar products, so you might be able to find a cheaper model by shopping around.