What size digital picture prints the best 4x6 picture??

Question: What size digital picture prints the best 4x6 picture!?!?
Best Answer - Chosen by Asker:

As people told you in the OTHER identical question you asked, you need to make sure it is at 300dpi for best results, which means the size needs to be 1200 x 1800!.Www@QuestionHome@Com

640 x 480 is what I use to print 4x6 pictures!. Not sure if that's the best, but that's the best available for my camera!.Www@QuestionHome@Com