Blowing out an unused GRUB booter

I had an unused version of ubuntu linux installed to dual-boot with WinXP. I recently did some hard-drive swapping, and wanted to get rid of the linux install for a while. I initially just tried deleting the partitions which held the linux install, but upon restart I got a GRUB error as GRUB tried to find the linux install that it thought should be there. To fix this, I had to boot up with the WinXP recovery CD, and enter the recovery console mode. Once at the recovery console, it was simply a matter of typing fixmbr and hitting enter. Upon restart, WinXP loaded right up and didn't lose any of my XP data. Good stuff.