You're in luck. Loft Solutions fit windows.

However, if you're going to try it on your own, here's a few instructions, for a complete set of instructions click on the links on the below.

Preparation

Slide 1

Slide 2

Slide 3

Slide 4

Slide 5

Slide 6

Slide 7

Slide 8

Slide 9

Slide 10

Slide 11

Slide 12

Slide 13

Slide 14

Slide 15

Slide 16

Slide 17