your bios will tell you what your temps are, but you would be better off using programs like motherboard monitor or mbprobe or hmonitor (although these might not work depending on your system). Run a search on google to get the download locations for these.
But Black Hawk Down uses the commanche 4 engine and it was heavily cpu dependant. So even if you do overclock your system it still might not run very well. But heres hoping as Im very interested in that game as well.
btw welcome