text: Bad idea.  XP is not a mac interface.  There are differences between a single and double clicks function.  Better for you to get used to it.\n\nThat said it sort of depends on what mouse you are using as to whether it allows for changing left click to be double click.  Generally you'll need to bring up the control panel-> mouse properties then remap in the buttons panel.  Once done somethings won't work right.