Paul uses K3CCDtool and works well for him...he really likes it.
I personaly dont like it...I have fallen in love with the free software called Guidemaster....it has a calibration function so you dont even have to align your guide camera on any axis....it does it for you....much better then guidedog and more accurate...and its free.
I didn't change 1 setting...oops yes I did....I just put the scope specs in under otpion and changed the move time for calibration to 5000ms instead of 1000ms...very simple to use...try it.
http://www.guidemaster.de/guidemaster_demo_en.asp