Visual Basic Script simple time elapsed

I want to show message to user 开发者_Go百科when 3 minutes passed in VBS.

If you're doing shell scripting, the following will work

WScript.Sleep 500 'this parameter is in milliseconds, this is 1/2 a second.
MsgBox "OK"

If you're doing web dev, you're better off using javascript

setTimeout("alert('OK')",500); //this is milliseconds again

Do you mean that you want the script to wait for 3 minutes and then show a messagebox? If so try this:

WScript.Sleep(180000)
MsgBox("Your 3 minutes are up, we're all going to die!")