C drive with OS is working fine, having difficulties adding 250GB HD. Have been helping him by phone.
Plan to visit tomorrow to install Bios update and look at other minor problems but have talked him thru Maxtor 250 HD install to the best of my abilities with no luck. Cable connections master/slave all sound correct, bios settings SATA +PATA, etc. OK. Thought driver update would help, guess not.
Will know tomorrow. Really, thanks for the help.