windows xp - samsung netbook OS for clean install

I recently had a problem with a corrupted registry on a samsung N120. When all else failed i reformatted the drive.

However having bought the machine with windows home ed pre-installed, I didn't have original windows disck for the clean install. So I managed to install another edition of windows XP (PRO this time).

Now windows opens, but several key functions are missing. e.g.:

• screen resolution - will not allow me any but 800x600 resolution


• native buttons - such as the fn + screen brightness is not working at all.

Any suggestions please?

? Is there a way to get the samsung OS online (since I do have the manufacturer's/installed product key)?

thanks

PS: It has been my intention to install ubuntu, but i need to know i will not lose functions like screen brightness, volume, and the trackpad's scrolling function. I'd be happy to bypass the windows option if i was sure to have full keyboard/samsung functionality