Screen placement problems on multihead setup.

Hi list,


I have two screens:

1. 1280x768 and
2. 800x600

I want to place them aligned by their bottoms like the following diagram:

        --------
--------|      |
|      ||      |
|   2  ||  1   |
|      ||      |
----------------

Something like:

Screen "Screen1"
Screen "Screen2" LeftOf "Screen1"

wont do because the screen would be aligned by their tops.

I tried somethings with the Relative placement but it doesn't accepts 
negative values, AFAIK at least.

And here is the worst of all: if I try to use the Absolute placement I 
get a "Absolute in an invalid keyword" error.

I am using XFree86 4.2.1. from Mandrake 9.0.

Does anybody has some suggestion?


TIA,

Rodrigo