Hi Irene,
You can look at the Measurement Studio for Visual C++ tutorial here:
http://zone.ni.com/devzone/conceptd.nsf/webmain/1B8BF8AA16FF3078862568E90057EF02
Another tutorial is here:
http://zone.ni.com/devzone/conceptd.nsf/webmain/B157E2EBFCF8998686256A17005CF188
David Mc.
NI Applications Engineer