Weblog MakeUseOf details how to install Windows on your Mac with freeware virtual machine software VirtualBox. We've already shown you how to run Windows apps seamlessly in Linux with VirtualBox, but the MakeUseOf guide takes on the new OS X beta version of VirtualBox with a nice step-by-step for getting started. It sounds like VirtualBox isn't as robust as other Windows-on-Mac alternatives, but it is the only no-cost app. If you've always wanted to ride the Windows-on-Mac train but didn't feel like shelling out for VMware Fusion or Parallels, VirtualBox looks to be a viable alternative. If you've tried running Windows on the latest version of VirtualBox for Mac, let's hear how it's worked for you in the comments.
1 Free Program to Run Windows on your Mac [MakeUseOf]