Any help will be appreciated.

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I would like to change the world, but they don´t give me the source code.
MS Windows 7 Ultimate 64-Bit
Intel(R) Core(TM)2 Quad CPU Q9300 2.50 GHz
6.00 GB of RAM, NVIDIA GeForce 9800 GT

MacBook Pro i5 OSX Lion

I see. But tell me something ... what module are you modifying? Are you making changes to the source code? If so, keep in mind that this might get you in a difficult position when they, in the future, make any changes to the source, so you would probably loose your changes once upgraded.