While Apple’s dual-boot solution Boot Camp is too cumbersome for the real world — using virtualization seems to be the better solution for running Windows software on a Mac.
UPDATED! Parallels Desktop for Mac "Its now easier to install Windows on a Mac than it is to install Windows on a PC! That’s due to the inclusion of our new Installation Assistant into today’s build of Parallels Desktop for Mac."NEW! Fusion VMware Virtualization for MAC OS X "Switch between operating systems by easily tabbing between applications and share data between the two operating systems by dragging and dropping files on the fly—all without needing to reboot."