Partial screen capture via xy and height/width parameters

[fhanna]

VB gurus please help:

I want to capture an area of the screen providing the routine xy coordinates and the height and width of the screen area. This capture would be at intervals and once captured comparing the image area captured to a database of .bmp files (small images of approximately 500 bytes preloaded to an array) of same area for comparison to determine if changed.

To get a start on this first of all I would like input as to the use of VB6 or .NET for this endeaver. Secondly, any recommendations as to where I could find routines that would closely resemble this capability.

As always I appreicate any input provided.

Fred Hanna