Monitoring computer temp.

Just recently I had to install another power supply, my old one went dead. But after looking over the manual I found out that there is a 3pin fan signal connector, with this cable I am suppose to have the ability to monitor the temp of the computer.

How can I do this, I did plug in the 3 pin connector to the only 3 pin slot on my motherboard, which was my chassis fan connector. No was this the right thing to do? If not let me know and I will pull it out. If it was the right thing to do, how do I get to monitor this temperature, is there software that I need, or what needs to be done. This is an Antec power supply that I am talking about.

I appreciate everyones help.

Thanks

Could you provide the model nmber, I want to reeserach this first. I also dont believe that the 3pin connector is for temperature. There two wires are for fan power and the extra wire monitors the fan speed. I could e wrong. If you could provide the model I can check it out.

the model number is PP412X.