You can buy a colovision spyder 3 . It's not too expansive, and it do a great job. There are many reviews on it on internet.
What is a good program to calibrate a 23" Samsung LCD monitor for photo editing?
I see names like Spyder, Screen Perfect, Pantone and names like that, but don't have a clue to which is best.
I don't do photos professionally just for family and friends, but I want to get them the best I can.