[jlicc326]

In 8830 home screen, select Manage Connections icon.

Select Wi-Fi Options
Select your home Wi-Fi network (if it's already in the list. If not, go to Set-up Wi-Fi Network and scan for it).
Press the trackball and a menu pops up (Save/View/Edit/Wi-Fi Diagnostics/Full Menu).
Select Edit
Scroll down to where you see the Checkbox for "Automatically obtain IP address and DNS"
If already checked, uncheck it.
Enter the fixed IP adress you want to use. It should be an IP address on your home Wi-Fi network that's not already in use.
In my case, my home network addressing starts at 192.168.1.1 (the Verizon Router's address), and goes up from there. I have about 10 address already used on the network so I input 192.168.1.11 for my phone.
Input 255.255.255.0 for the network mask.
Input 192.168.1.1 for the default gateway (this is my verizon router's address - yours may be different)
Save the settings. That should do it. That's how to configure the phone to use a fixed IP on a given Wi-Fi network profile.