I am using VB 6.0 with NI 2.0 under Windows XP. When I call the FindLstn32 to locate what is on the buss, then call copy_ibvars (located VBIB-32.BAS) to verify status of the GPIB I receive an error status when checking the ibsta. I believe the Running the same code under VB 6.0 with NI 1.7 with the same hardware does not indicate any errors.