Can IIS be configure to forward request to another web server?

For IIS 7.5, Microsoft provides official modules for this!

• URL Rewrite: http://www.iis.net/download/URLRewrite
• Reverse proxy: http://www.iis.net/download/ApplicationRequestRouting

In the site settings, you’ll get an “URL Rewrite” icon.

• Open it
• right click on the “inbound rules list”
• Select “Add Rule(s)”
• Choose “Reverse proxy”

In this dialog you can enter the hostname + port to forward to. After adding the rule, opening the edit dialog offers more customizations.