>Sir tnx for the link ... i've already tied the codes but could you help me how to save those frames , i mean how to save those captured pix. Please teach me how.. Our defense is bound next week , i'll be grateful if you could help me .. tnx

Did you read whole post?
At the end there is a method how to save captured stream into BMP writem by Bryan Walton. Here it is:

By implementing the code below into the getframe method
the captured frame will save to a bmp file when the getframe
button is clicked.

#DEFINE WM_CAP_FILE_SAVEDIB (WM_CAP_START + 25)

LOCAL lcFile
lcFile = "" && File name to create
lcFile = "c:\temp\sample.bmp"

THIS.msg(WM_CAP_GRAB_FRAME, 0,0)
THIS.msg(WM_CAP_FILE_SAVEDIB, 0, lcFile,1)

-- Bryan Walton