I'd like to remap arrow keys to windows key plus ijkl. I can do this easily in Autohotkey on windows, but I'm struggling on Linux (Ubuntu lucid).

I'd really like the solution to work independently of whether I'm using a window manager or not, and to involve modifying as few files as possible; I work on a lots of different machines and am always building new ones, so would like to minimise reconfig effort.

I've tried to understand .Xmodmap, but couldn't make it work (was hard to find detailed docs on modifier keys).

(Am also considering win+hjkl, but am probably not that hardcore)