As a rule, I like to carefully install the new version separately. That way I can easily uninstall it if I'm having problems with it, and still have my previous version to work with. Then, if everything's working fine, I can uninstall the older version after moving whatever projects I've been working on to a location easily available from the new version.

This is just how I do things, but if you don't want to do that, I believe most software installation packages now-a-days are set up to install in place of whatever version you are currently running.

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OK . . . Where's my chocolate?

Butterfly Dezignz