Well, if you are planning on reinstalling Windows, just use the install CD to do the partitions. There is a section where you can create however many partitions you want near the beginning of the installation.
Yeah, its not a free program though, but stops you having to reformat the drives if data are on them (though it suggests you back up anyway)
Though installing using the Windows CD, with thwe 160GB drive, you'd end up with 4 windows installations on 4 seperate partitions. But you could get around this by first doing that, and then finding C. You could then use the Disk Manager to format the other 3, making them blank and ready for use.