You can add new installations to Environments 9.1 (v2.0.11) by going to the System Settings (Wrench/Screwdriver icon) and then press the Installations button. From there, press the Define a new VA Smalltalk Installation folder button (only button) and then select the path of your 8.6.3 installation. The name will fill-in automatically. This process has been improved for 9.2 version in that there is a search button that looks for unregistered VA Smalltalk installations in all default locations and then provides a list to select of them to select from; of course, that won't be useful to you right now...just something to look forward to.