I'm using 4.0.3 on Windows and am curious about the best way to upgrade. I don't need two instance of IDEA around. Should I uninstall 4.0.3 first? (my settings are in my home directory so I'm thinking this should be ok). Does it matter if I just uninstall 4.0.3 afterwards? I get a bit confused when I get to the section of the 4.0.5 upgrade when it asks is you want to use existing settings from another IDEA version and then it wants you to provide a directory? It seems to want me to provide my 4.0.3 directory, but I'm not aware of any settings I keep in there so I'm a bit confused.