the ps3 doesnt do adhoc connection, so no connection between tp2 and ps3.
i use wmwifirouter(the .91 free version) to feed the tp2 internet connection to my router. the router then feed the internet connection to everything else, including the ps3.
here is the guide on how to do that:
http://support.wmwifirouter.com/knowledge/KB0806019/
its actually pretty easy, and to sum it up.
1. disable dhcp server in your router.
2. run and
connect wmwifirouter normally
3. go to your tp2 wifi setting and connect tp2 wifi to your router wifi.
4. connect the ps3 to your router
if you want to setup a secure connection, you can do that in your router wireless security configuration. when connect the tp2 to your router, use the same security key you setup in your router.