How to set static IP address for wi-fi connection?
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.


If you’re not sure what your settings are, and assuming you’re using Windows: 


Open a command prompt by clicking Start, then Run
Type in cmd and hit Enter
Type the line ipconfig -all and hit Enter, the relevant details should be listed there. 


Just make sure you use a different number for IP address on your phone than is shown on your PC!