Hi, this my first thread maybe I'm wrong with branch, don't kick me please

I've buy Lenovo G550 (with intel graphics) and installed Fedora 12. Everything works fine exclude three Fn keys.
1. Fn+F5 (WiFi) it's not important for me but will be good if it will be workable.
2. Fn+UP (Brightness up) and Fn+DOWN (Brightness down) this keys very comfortable at sunny day.
Please advice, thanks.
And one remark: after loading bios bis a starting of xdm brightness key are working, after brightness keys doesn't responds.