Acer P223W.
Its $349,which make it quite a budget 22" monitor. 1680x1050
resolution
By the way,whichever monitor you choose,please check for DVI
output... newer and advanced monitors should have this by default
instead of the ancient VGA's 
And also,please do not choose 3rd tier brand(like Avixe)..thats is
- cheap and ulu brand one..its never as reliable as distinguised
manufacturers such as Acer,Samsung