How to use volume keys for scrolling? (everywhere) I would like to use volume keys for scrolling (lists, homescreens, icons, documents -  anything which now does require you to swipe finger in order to scroll - just like my old java phone where you could scroll using screen gestures AND volume rocker as well); 
would it be possible?

I have Samsung SGH T679 (android 2.3.5)

I have tried ButtonRemapper but it didn't help (it did not show volume keys as customizable buttons)
To my knowledge, there is no way to do this system-wide without heavily modifying the ROM, or at least system files. Especially if ButtonRemapper doesnt show your volume keys as programmable buttons, then it won't be easy. Some apps will, however, let  you customise their behaviour. For example, I know browsers such as Dolphin and Miren as well as Google Reader can change the volume button's behaviour.