Deev8:
It's also a great idea to take a disc image of a successful working set-up. Then if future changes mess things up you can restore from that image.
what do you use for a disk image? I tried out Acronis TrueImage and it worked "ok" but failed slightly in the intuitive stakes... At least for my intuition.

. Luckily, it has 6150 on-board to get me out of the pinch. Pricespy, here I come.