Passing a variable

How can I have the web browser control navigate to a variable I have tried the code bolw but get a type mismatch
the vaiable is read from a text file that contains a list of urls

WebDl1.Navigate(strImported)

thanks

Dim url as string
Public Web As New SHDocVw.InternetExplorer
....
Web.Navigate url


--- copied straight from working code, make sure url is Dim as String