Originally posted by Nightbreed
Most newer motherboards have thermometers built in, I wouldn't be surprised if a VIAO had one. You'd be able to find out by accessing the BIOS (you can get to it by pressing one of the funtion keys or delete key as soon as you switch on the PC, it will tell you on the start up screen which key it is). Somewhere in the BIOS it will tell you the CPU Temp.
Here's a good link with more info and some tools that may help you out: