> On my Acer Aspire (AS5536), there is no way to simulate a middle-click by
> pressing both the right and left mouse key. But I badly need this middle-
> click to paste in the x-selections.
Assuming your Acer has a touchpad, you should be able to to configure
the `synaptics' X11 driver to accept a "tap in top-right corner" as
a middle click.
Stefan