Why I have to install the bejeweled cd game every time a want to play it?

I have the bejeweled 2 game and I installed in the computers that i have. In one of them i can play the game without the cd but in the other one every time i want play it ask me for the original cd, When I insert it still asking for the cd and i can't play. I have to delete the game in the pc and install it again. I think isn't normal. Can somebody help me please. In the pc that work is windows xp and the other one is a laptop with windows vista.|||its because either way if you download it or not, it will still ask you for the disk because of your computer.