Turns out it still is relatively easy, except you have to know that Microsoft changed $S$Q to $V$Q. Why? $Ss and $Gs I suspect.
In our example we'll redirect all pages under http://olddomain.com/content to http://mydomain.com/content.
- Pick the virtual directory you want to redirect. e.g. http://olddomain.com/content
- Click HTTP Redirect under IIS in the IIS management console.
- In the HTTP Redirect Dialog:
- Check Redirect requests to this destination
- Enter your new path ending with $V$Q. e.g. http://mydomain.com$V$Q
- Counter-intuitively check Redirect all request to exact destination (instead of relative destination)
- Choose the appropriate Status Code (Permanent or Temporary)