I'm using OSX 10.3.9. I'm told I should update Safari from its current 1.3.2 (v312.6). I've updated software from Software Update successfully in the past, but a Safari update has never appeared in the Software Update dropdown menu. I downloaded Safari304BetaSecUpdateSetup.exe, but when I double click on the icon on the desktop, I get a message saying, "There is no default application specified to open the document Safari304BetaSecUpdateSetup.exe." So, how do I update Safari?