Switching Beteeen 32 bit and 64 bit

Does anyone know if it is possible to switch between 32 and 64 bit OS easily? I have a program that works only on 32 bit OS. I have recently purchased a new laptop that has windows 7 home. However, the program does not work with 64 bit. Is there a way to install it as a 32 bit program on a 64 bit system or a way to allow me to switch it to 32 bit mode when I am using it? Thank You

There is not a switch for them. You will have no choice but to reinstall. All your applications will need to be installed again. For best results its always best to format before an operating system installation so please be sure to backup all your data.