JT, Thanks for the reply. What I think that might be the issue is some type of security block with the latest WinXP Home Edition Update which prevents some installers like Install Shield from any having access the the Windows Registry. I do not have a definative proof, although all symptoms are pointing into that direction. If anyone knows what Microsoft had or is doing to WinXP Home Edition security please comment. This issue might affect third party vendors who generate tools for LaBVIEW into the future. Thanks again for your reply, Andy