[CentOS] installation help

Hi All;

I'm trying to instal CentOS on my new laptop but I've run into a few issues.

It's a Dell Precision M6400 - I'm installing CentOS 5 (64bit) running KDE

I have 3 issues:

1) I cannot get the wireless to work

2) I cannot get sound to work

3) I cannot get the full screen resolution I can go to administration --> display and under the 'Hardwae' tab I can configure the display as a generic or as a Dell 1920x1200 but no matter what I choose the 'Settings' tab only lets me choose a max of 1400x1050

I can get the wireless and sound to work in Fedora 10 but I'm not sure how to tell specifically what devices they are.. I thought I could use Fedora 10 to help debug the sound & wireless.

Thanks in advance for any help ...