So my job won't install drivers on my work laptop because they say that they do not allow personal mouses. The mouse they issued was the standard HP mouse. Given that I have Windows XP SP3 installed, is there a mouse that I can buy that allows for both vertical AND horizontal scrollwheel functions (I work with a TON of spreadsheets) without installing a 3rd party driver? I can plug in my Logitech mouse and it'll work, but the scrollwheel only works vertically. Thanks!