My Ps3 does not have built in wireless nic, so I was wondering if 1: I could connect it to my laptop so it gets my laptops wifi internet, or if not 2: I could buy a wireless USB nic for the ps3 that would work.
Well for your first questing; i believe this is possible. I remember talk of this quite a while ago earlier in the year. Unfortunately i cant give you details about how to do it, only that its possible.
For the second question, the answer is no. It is possible to use a laptop because it goes through the ethernet, but the ps3 is never going to check usb for network connections.
I have done this on both mac and windows platforms. If you are connecting to the internet on your laptop via wifi you can allow your ps3 to connect to the internet by hooking the ps3 to the laptop with an ethernet cable.
1. Simply go to your network connections via control panel in windows.
2. Right click the wireless connection or what ever connection is the connection to the internet and go to properties.
3. In the advanced tab click the box for allow network users to connect through this computers connection.