I started a deskmod afew months back. It's gone well, and slowly developed over the months.
I had a desk made for be, before i was into computers, about 8 years ago. Then after 6months of a thermaltake soprano, i decided it would be good to build my computer into my desk.
The mod cost me the price of some fans and extra cables.. haha. So quite cheap.
The 4 120mm fans ment i had great airflow. And managed 23c idle, 32c load on my 4870.
But recently i bought a Zalman reserator, and now ive gone fully custom water cooling. Which should be done this Wednesday.