Software updates
I'm not able to update my software from Mac OS X 10.5.8, I need to download a program called Citrix so I can work from my computer and it says I need to have Mac OS X 10.6 or better, and my computer says there isn't an update available and it's not letting me download 10.6 or Higher. Someone please help!
MacBook, Mac OS X (10.5.8)