This key can be disabled using the registry. Here are a couple of links that describe it.
http://www.windows-help.net/WindowsXP/tune-151.html
http://www.winguides.com/registry/display.php/549/
CVI has functions to read and write registry entries, but you may need to restart your machine or log in again. This is not a great solution since you can't just disable it at will and it will take effect for all applications. If you really need to do it, write the registry key in your program. Don't tell the user to restrart: just let it take effect the next time they log in.
The Programmer's Toolbox (toolbox.fp) that ships with CVI has registry functions including functions to read and write registry values. Add toolbox.fp (...\CVI\toolslib\toolbox\toolbox.fp)to your projec
t, then you can browse these functions from the Instrument menu or, from a code window, you can search for a function by name by pressing P.
