How to change port in VSTS 2008? For web testing

Hi!

For those webs that are hosted either on my computer or on my office network VSTS 2008 is working fine for automation test, but for any web that is hosted outside my office, let suppose www.google.com.pk I am having following error:

web browser:
Request failed: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.1.7:80
Response:
Request failed: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.1.7:80
here IP is correct but port is showing 80 which is 8080 not 80 set in proxy.
I searched and found this:
When you use the ASP.NET Development Server to run a file-system Web site, by default, the Web server is invoked on a randomly selected port for localhost. For example, if you are testing a page called Default.aspx, when you run the page using the built-in ASP.NET Development Server, the URL of the page might be the following:
http://localhost:3499/Default.aspx
You do have the option to control which port is used when using the built-in development server.  The steps to specify the port to be used are slightly different depending on whether you are using a website project or a web application project.
To specify a port for the ASP.NET Development Server - WebSite / WebServices projects

1. In Solution Explorer, click the name of the application.
2. In the Properties pane, click the down-arrow beside Use dynamic ports and select False from the dropdown list.
   This will enable editing of the Port number property.
3. In the Properties pane, click the text box beside Port number and type in a port number.
4. Click outside of the Properties pane. This saves the property settings.

Each time you run a file-system Web site within Visual Web Developer, the ASP.NET Development Server will listen on the specified port.
but down arrow has nothing like Use dynamic port etc and there is no information regarding port, please do check attachment for this.
Thanks in advance