Best setup for mult-tabling?

[PokerForMath]

I am going to start multi-tabling on on-line poker. I am wondering what people think is the best monitor set up. I am thinking of buying either a 20" or 24" wide-screen monitor, as in:

http://accessories.us.dell.com/sna/produ...ategory_id=4009

or

http://accessories.us.dell.com/sna/Produ...ategory_id=4009

I want to play at least four and as many as eight games at a time.

Any thoughts?