calibrating screen...

new refurb pb g4, the screen theres something not quite right about it - looks a bit bluey, when i go into system prefs, display, color, i change the diffent settings and there are a few that look a bit more blue and a bit warmer, orange-y (its like a slightly off white balance set on a dv camera) its so minimal that im questioning iit all the time. im also running a imac g5 and the screen on that is miles better - refresh rate, colour saturation etc.. (obvioulsy becasue its a desktop) but i think there def is something up with the calibration (i know i can do this manually but want to get it exactly right)


QUESTION is - is there a application out there that wil auto set and calibrate the screen - ie do a white balance if you will