+ 0 Votes Reponse To Answer DataPoint1976 2 years ago @ultimatloozer - I certainly didn't mean to imply that you can only run 64 bits apps with 64 bit OS. That is why I phrased it as: "Of course if you want to take advantage of all the 64 bit OS goodness with more available memory etc. you will also have to upgrade your applications software to 64 bit versions to take full advantage". Key words being to "...take full advantage...". I guess I could have made it clearer by saying "...you should upgrade..."On the other hand, I don't know why anyone would suggest purchasing a 64 bit OS to run 32 bit apps. That's like buying an aircraft carrier and flying Piper Cubs off of it. Unless she plans to later update those applications to 64 bit or begin a forward migration to 64 bit apps suggesting a 64 bit OS would seem like overkill for her unless she needs the extra memory capacity.