Instead, make Vertical Browser your SubHome Page (an iframe container that wraps itself around your home page).
Enter the URL to be used as your home page
(it must not break out of frames) and Vertical Browser will wrap around it.
To directly start AutoSurfing when the page loads add =PLAY to the end of your link:
The Resource Location URL you enter will be persistent as your Main Website and will open whenever the "reload main" button is clicked. It will also automatically serve as your parent website when the Vertical Browser iframe is both installed and uninstalled.