Help with monitor choice

[Dobster]

Hi all, new, noivce member here looking for some help and advice please :)

I decided to sell my GTX 570 and have just bought a Sapphire 7950 OC with the plan of adding two more monitors.

My main monitor is a Samsung T260 and it is proving difficult to find anything to go with it. I don't really have the money or the space to buy two more 26" screens and even if I did they seem to be being discontinued. The plan was to add two 4:3 aspect screens but I can't find anything that is the same screen height :(

If I understand things correctly it needs to be the same amount of vertical pixels and the same screen height?

The conclusion I have come to is to use either a 17" or 19" screen in portrait to get the 1280 height but what will this do when put either side of a 1920x1200 screen?

I've spent hours looking into this but have become lost and confused :~

Thanks

Dobster