you need to download a utility that provides CPU temps like speedfan. If you go to www.guru3d.com and look under monitoring utilities there are a number of them that gives you your temps. You can also try www.majorgeeks.com and look under monitoring.
Most new motherboards come with an install CD that has various utilities that include temperature monitoring. You could also try your motherboard manufacturer's site for any such utility downloads for your model of motherboard.
...or PC Wizard 2008. It tells you everything you need to know about your computer system including all the temps available for it, name of all your parts, etc.