I do not own a Mac machine so I would like to create a virtual machine on Windows 7 so that I am able to run xcode on it for iPhone applications development.I know the process of how to create a virtual machine so what I wanted to know is:1) What specification should I give this virtual machine so that I am able to run both the OSs smoothly. I own an Acer laptop with 4GB RAM, Intel i5 2.27GHz, 512MB Geforce GPU.2) Does the Mac OS X copy comes with xcode or do I have to buy separately.Thanks!