phil watson :
Also some other functions seem to be not working in word, could the problem be there?
After you installed office 2010 did you activate it with the respective product key? I would try the method below and if it's still doing it maybe uninstall/reinstall office 2010.
phil watson :
Sorry, never used wordpad.
(i'm assuming you're using windows, unless for some reason you're using ms office on a mac)
Go to start > all programs > accessories > wordpad, type a paragraph worth of random text, and before printing it check to see what print preview looks like. If the additional margin space only happens when printing from microsoft word and not wordpad then you've pretty much narrowed the list of culprits down to just word (you could also try...