Picky

Hi guys, I know I am running before I can walk, but could you please explain how ( and if ) it is possible to record the temperatures of CPU, Mobo and Gfx for a 5-6 hour session I shall be running? My objective then is to prepare a graph from the results showing three colours plotting the temperature during the session. I presume exporting to Excel is ok, but I am not sure what I need to do to record the three factors to start with.. Thanks in advance P