<p>I never heard about that "format" step. We haven't attempted to install Windows yet. S doesn't need it until next semester and this will give him some time to find out exactly if/why this one particular class requests it. </p>
<p>Thanks for all of the info. If he finds out that he truly does need windows installed on his MacBook, we'll buy a full new copy of Vista (I think MacBook recommends 32 bit version only).</p>
<p>I have 2 macs. If I buy one new Microsoft Vista Home Premium with Service Pack (not the OEM but full version) can I install the operating system on both computers?</p>