The NI-IMAQ for USB Cameras driver does not currently support development in any environment other than LabVIEW, so you will not be able to acquire with a CWIMAQ control using Visual Basic and a USB camera. You might be able to find more information at the page linked below. It directly relates to acquisition in LabVIEW, but you may be able to find some useful information there to start with.
Thanks a lot. I wanted to confirm. I had a strong feeling going thru the help file the above said kb link. Atleast , i can stop trying. Sad to know that there is no other alternative. Thanks Suresh
To help us gauge interest and possibly expand our current offering for USB cameras, you could submit a product suggestion at the link below. I'm sure if we find there is enough interest in a USB driver we will work toward providing one. The link is in the Product Feedback section.