get a parrellel like vmware fusion or parellel desktop google it ( u can get it for free but be careful some may be viruses)
So true, commercial software is ridden with viruses, especially those written for Mac OS X, which lately has so many viruses no one can name, that it is a plague to just read uninformed information about it.
For the ones, who want to inform themselves about the difference of viruses, spyware, trojans and other malware, read the following twice.
And to be a bit informative: Currently there are NO/ZERO viruses for Mac OS X in publication, just some trojans, which you have to manually install yourself and you have to enter your password to do so.
Btw, as the poster above me already stated, and the one I quoted misstated and misspelled, there is virtualisation software, that can run Windows as a virtual machine (VM) inside Mac OS X. The most prominent ones are Parallels Desktop and VMWare Fusion, both can even use the Boot Camp partition to run Windows. But as virtualisation software is run inside Mac OS X, don't expect native speeds and excellent graphics performance, as there are layers (quite thick) between Windows and the hardware, thus the GPU can't be fully utilised and 3D intensive applications won't run perfectly or even at all.
Btw 2, Boot Camp is for running Windows natively, meaning Mac OS X is not booted, only Windows. Thus the aforementioned virtualisation software comes into play.