How to connect my ps3 to the net using my 3 dongle?

[Katherine]

I have a 3 mobile dongle and was trying to use it to connect my PS3 to the net using my laptop and an Ethernet cable. I've tried to follow tutorials on the web and all seem to aimed at Windows XP or Vista, I've got 7. Now when I get to sorting out the PS3 it says that the finding an IP address times out. Anyone got any ideas?
One of my friends at uni used to be able to use his dongle by connecting it to his laptop and then using an ethernet cable to in theory use the laptop as a router. I just keep getting the IP address time out. My laptop is 'seeing' that the ps3 is there but cant seem to identify it?

[The Doctor]

You can't get internet on your PS3 that way, sorry! You need to have the PS3 on a wireless network via a router or wired to a high speed modem those are the only ways.