After heating the back of the motherboard for one minute, flip the motherboard over and lay it on the chassis as shown.

If you have installed the RROD fix kit already, keep the two small black heat sinks included in the kit stuck to their respective chips. The tape that is used to attach them to the chips on the board is extremely strong and attempting to remove them may damage the chips underneath. The heating process will not damage the heat sinks in any way.