Made this video for some of my friends and decided to share it, and sorry that I advertise at the end of it, but if you think it will kill you just close the window at 2:57 and you will be fine.
If the video doesn't work, uhm, let me know. [ame=http://youtube.com/watch?v=NXFQ1SueQ6w]YouTube - CoD4 House Jumping[/ame]