Reading info on the 2011 version, says you need MAC OS 10.6.8; I have 10.6.5 I think, so it would not be compatible? Also, if adding this will not allow me to edit current PC docs I have, it will be useless. I already purchased something called icXL and icWord, but it only allowed me to OPEN pc docs, not edit them. They were nice enough to refund me, however.