I bought a refurbished IBM Thinkpad T40 2373, but did not get a manual with it. Can someone tell me what all the blue function keys do? I can't see the symbols clearly, and probably wouldn't know what they mean, if I could. Also, how do you wake it up from sleep mode? I just push buttons till it wakes up, or else manually turn it off and restart it. It would be good to have a complete manual, if anyone knows where I could get one.