Hey everyone.  For my Cisco networking class I need to be able to run Packet Tracer for my exams and homework.  This will be about the only time I will use windows so I need some input.  Do I need to buy a version of windows and bootcamp or is there another method I don't know about?  I've had my MBPr about a month so I'm still finding things here and there since this is my first Mac.  Any help/input would be greatly appreciated.  Thanks a bunch.