I hesitate to take issue with Richard at N A C Inc, but the Mp value is NOT the be-all and end-all of digicams. I have a 1.3Mp and a 6Mp Minolta and recently bought an Oregon Scientific 2Mp. The 1.3 Minolta produces SUPERB pictures which will blow up to A4 with excellent results. The 6Mp Minolta gives (obviously) better quality in most areas. The OS 2Mp is credit card sized and a 'point and shoot' which gives reasonable results but far less quality than the 1.3 Minolta.
The real criteria are the quality and size of the CCD and (more importantly) the lens.
The OS 2Mp costs £99.95 but you may find stocks are low.