- Enable AHCI

- Backup + Windows partition with one tool

The first step requires you to shrink the Mac OS X volume and create a separate NTFS partition for Windows. I'll describe these steps using Lion, though the procedure in Snow Leopard doesn't differ a lot (except for the fact that Windows XP and Vista won't work in Lion -- yeah, Apple ditched "legacy" support entirely with Boot Camp 4 and Lion).

So how does this work? First, start Mac OS X Lion and head over to Go/Utilities/Boot Camp Assistant. On a Mac with an optical drive, the first dialogue box gives you the option to download the "Windows support software" (i.e. Boot Camp 4.0, which includes all the necessary Windows drivers).