XCam as webcam?

[linhn]

My 4 Xcam work well with IWitness.  I'm
trying to use Xcam for IM webcam.  Have
anybody been used XCam as webcam using in
Yahoo! Instant Messenger?  Does anybody
have experience installing a webcam to use
with IM at the same time with XCam in
IWitness?  Any conflicts?  Thank you in
advanced for sharing your experience.