I have an old eMac running OS 10.3.9. Is there a newer version of OS that I can upgrade to without costing me a bundle and it still work without having to do much else with regards to the hardware that originally came with this computer. The reason I am thinking about upgrading the OS is I purchased a Magic Jack and it does not work with my version of OS. I've done searches online to try and find a fix so that I don't have to upgrade, but all I can find is that it will work with 10.4 +.