My girlfriend is buying a new monitor, specifically the Dell 2005FPW which is a 20 inch widescreen. Shes got a G4 dual processor, which is a number of years old, must be almost 6 years now. To support the new monitor we'll apparently need a new video card as well. Could anyone suggest one that supports widescreen format, ie resolution of 1680 by 1050, and will most likely work with this computer. $150 to $250 would be ideal ($300 max!). Thanks.