Can the new MacBook / MacBook Pro Support Dual EXTERNAL Monitors

I tried the Matrox DualHead2Go but it did not work at maximum resolution with my HP LP2465 screens. Specifically, http://www.matrox.com/graphics/en/products/gxm/dh2go/resolution/digital/resolutions.html indicates the max resolution requires a refresh rate of 58Hz. The GeForce 8600M GT on my MacBook Pro only offers 60Hz on these LP2465s. I'm a little fuzzy on who the guilty party is here, but I do know I could not get a clean image. If anyone from Apple is reading, more and more people use their MacBook Pros as their primary workstations because they are already more than enough power to do most development or even graphics work. But the screen real-estate still suffers. I can think of no more urgently needed feature than support for two simultaneous external monitors. Give me that and I will have the perfect workstation.