three flashing red lights. How do I fix this? Please HELP!

Jason Hoffman, sounds like RROD. Clean your fan and your air inlets. also consider replacing the thermal paste on your processors. If that does not help you may have to perform a reflow. this is not a permanent fix by no means. It has to do with the architecture of the processors (bumbs and substrate etc.). you can of course try the kit is strictly providing additional pressure on the GPU/CPU to try to close cracks in the solder joints ( as well as reconnecting the bumbs, long story). Combining this with a reflow with a heat gun may just complete a good repair. Check on here step 49 will explain it. Check on here for the reflow guide. Also "remember that all that this kit is trying to accomplish, is to close cracked solder joints. Most of the time the extra few pounds of torque provided by the kit, will close those cracked joints. It is not a permanent fix, nor is it a sure thing either. It all depends on the individual logic board and the damage to the solder joints as well as the chip itself I strongly suggest a reflow with this kit. The chances to be successful is greater with a combination of RROD kit and a reflow. Of course, a permanent fix would be a total reball. For a reball to be done, you will need the stencil, a rework machine as well as the proper reball temperature template. If you do not have those tools, you can not do a reball. This will give you a pretty good idea on how to do it. As I mention in here, even a reflow may not be a sure thing either.