keyboard issue,…

I have a HP vt6200 Omnibook laptop with German Keyboard. Recently my internal harddisk crashed and I replaced with a new IDE disk. I installed Windows XP (English US) afresh. Also installed the necessary drivers downloaded from HP site. Now the german keyboard is not working. It types multiple characters & behaves erratically. When I connect an external US English Keyboard, it works perfect. I tried changing the language/keyboard settings. It didn?t work.

I donot want to use German anymore on that laptop. All I want to use is only English. Now I am unable to use the laptop keyboard at all. Pls help !