This may be old news to some, but I totally forgot about it until I found out about it (again)! If you have a Magic Mouse or Magic Trackpad in Leopard on a PowerPC Mac, you can enable momentum scrolling just like an Intel Mac in two easy steps..
To enable natural scrolling on a PowerPC Mac (same direction as on an Intel Mac, as opposed to how it scrolls on a PowerPC Mac), you may download scroll reverser and add it to your list of startup items.
.
– Step 1: Open terminal
– Step 2: defaults write com.apple.driver.AppleBluetoothMultitouch.mouse MouseMomentumScroll -bool yes
– Step 3: Launch system prefs > Mouse/Trackpad > uncheck and check “scroll”
– Step 4: All done!
