wut?
Your desired monitor configuration has screens 2-3-1 and the mousecursor should sweep across them from left to right. What I am suggesting is that you arrange the numbering on your sample layout in the order 1-2-3 or 3-2-1 such that the mouse runs across in that sequence. To reach that, you will need to change the connections around, if that is the order you want to see your monitors on the table. Is this a better explaination?
BTW1: after the screens have done the happy-jive, does the mouse still sweep across correctly, or does it now leap from screen to screen?
BTW2: I have a Dell at work running Win98 and a twin-monitor video card (radeon 9250). On there the whole collection of desktop icons moves down the screen by about 5 pixels at every boot. To cure that tommy-rot was how I found Desktop Tidy. This is the only PC to show that crazy symptom, despite the fact that there are another 5 PC's with the same configuration of PC make, OS and video card. Just proves that all PC's have a secret life of their own....