Go PROJECT | REFERENCES menu.  In the list, look for "VISA library".
If the list does not show it, then BROWSE the visa32.dll located in the
WinNT\SYSTEM32 folder.
If the VISA library is earlier than V2.x, there is no TypeLib supported.
Makoto
"rfan99"  wrote in message
news:506500000008000000B6180000-984882144000@quiq.com...
> I have a copy of Labview base package version 5.1.1 and Microsoft
> Visual Basic 6.0 in my PII 333 128M PC. I like to use the NI-VISA
> feature to develope my own testing program by using Visual Basic.
> However, the NI-VISA library (i.e. visa32.dll) can not be found from
> the Visual Basic reference library.