Internet connection sharing on windows 7?

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I have a Playstation 3 on my room, but i have a really thick wall, so the wireless network becomes very slow because of the bad connection.

The 2 in one modem/router is on the other side of the apartment, so it would be difficult to add a cable to my room.

But my pc has great connection with 54 mbps, and the PS3 has 8,7 mbps.
Then i read about the Internet connection sharing thing.

Can i share the connection from my pc to the PS3?
And I know the ICS (internet connection sharing) works on XP and Vista, but i don't know about Windows 7.
But if it dont work, can I buy any product that boost the internet range?
Or a wireless router and add a cable from that one?

Thanks for all answers
I have set up the connectify network, but I can`t connetct to it from my PS3.

When i try to connect, it says : check the security settings for the wireless LAN.
I checked it all, and i found out it couldnt get a IP adress.

Does someone know which settings i should have?