Want to thank everyone for their help. The trick as mentioned by Kaj is to uncheck the resample box. Then when you change resolution it changes size.
I haven't done prints in awhile and just forgot this stuff. But once my mind gets around it I am good to go.
One more question - If I want to check the print quality can I take a 4x6 crop of a part of the image and print it to see what the large image will print like? I think I can.