HTC Desire: Set static IP

http://www.thisandroidlife.com/2009/09/setting-static-ip-address-for-wi-fi/

• Hit the hard menu button on your phone and then choose Settings
• From there, browse to the Wireless controls section and then choose Wi-Fi Settings
• Whilst in the Wi-Fi Settings section, push the hard menu button again and select Advanced
• Press Use static IP to put a check in the box and then enter the network settings as per your own network