Dopus4.x uses scripts + external commands for uncompressing. If you've been using it and its been working "out of the box", its because the setup youve been using included said scripts + unarchivers.
OS3.9 comes with "unarc" though, so perhaps you dont need dopus for this functionality?
It really is worthwhile learning amigaos though if you want to use the system. You lose so much of the OSes power if you dont, and its quite probably the easiest/most simple OS out there if you spend a little time learning it.
Yes Windows/MacOSX/etc. are perhaps a little more idiot proof "out of the box", but for those that arent overly computer literate do you really know what these installers, etc. are doing ? This is part of why these systems become a bit of a mess and slow down over time because of people not knowing where and exactly what theyre installing.
