okay bios temperater reading utility is giving me the following readings.

the cpu temp is usually around 25 C, I assume it is cool enough with what I have. It is an intell p4 1.6 which I have a hunch is horibly under clocked, 3d mark 2001 says that its max core clock speed 2.5 ghtzs

anyway it says the system is 30 C. Is this reason enough to add a sink and if so where should I add it. I belive the north bridge already has a sink. Here is my board

http://www.shuttleonline.com/specs.asp?pro_id=105