If you have more than one web. browser or email program on your computer Windows will have to choose which one to use when you open a web link or email address link. If it's not using the program you want, set it straight: click Start then Set program access and defaults (in XP) or Default Programs (in Vista). In XP click Custom, then the down arrow next to it, then make your choices. In Vista click 'Set your default programs', then choose a program from the list and click 'Set this program as default.'