I recieved a report from Roberto lo Storto (SB user and wiki contributor) that the NT.DLL is showing warnings/virus alerts in a couple of the anti-virus packages being used. The NT.DLL extension module allows you to work with the registry and shutdown the system from your ScriptBasic program as an example. If your anti-virus software detects the NT.DLL is unsafe, it might be if your not careful using the extension module correctly. Roberto sent me an online scan report in a PDF that shows which anti-virus packages detected a problem.
NT.DLL virus check report
