Ah thank you Sideeffect :D
I might go for a cheaper monitor then and use an adapter.
Depending on where you live and if you only have 2 current monitors, you may find that a Dell2210 is as cheep or atleast very close to a adaptor + 22" panel.
Ill use UK prices as a example, (this may be different in your locale)
22" monitor, cheep res 1650x1080 is approx £100 inc VAT but+ Shipping
Active DP - DVI adapter £125 inc VAT but + Shipping
Or Dell 2210 monitor £210 inc VAT with free shipping
The other point of note, is that the Active DP adapters are hard to get hold of at the moment, and there are alot of people that are having problems with there DVI-DP connected monitors dropping out.
DP is the new standard for display connectivity and you would be wise to think ahead and get the native DP monitor.
ta