You have a Windows PC? You have Windows PC at work? Your child uses a Mac?
No problem. The Java or Flash based Homeschool online software programs run in any internet browser independent of whether it is running on a Mac or a PC or a desktop machine or a laptop. Remember - you are not installing any software to run the online programs! They run completely inside the browser - so they work equally well on a Mac or on a Windows PC from Windows 95 all the way through Windows Vista and whatever will come next.