Snow Leopard purring in my Mac Mini

Finally got my hands on the new Mac OS - Snow Leopard and spend the night installing it. Had a bit of problems initially as my hard disk was not GUID. Re-partitioning and restoring from Time Machine did the trick and in less than 50 minutes, Snow Leopard is purring on my desktop. The speed increase is not apparent, and honestly I do not see any significant changes. Apple say most of the tweaks are under the hood, so I'll believe them. Regardless, the Mac OS is still a pleasing OS to work on. Windows? What Windows?