if you add more languages to language bar (keyboard) (EN) it is possible to have @ mark with Shift+2
This is a microsoft problem with XP. New intallation might help, or maybe they will repair
this in future service packs. Dell support couldn´t help.
I couldn´t fix this problem this better as well.
I had a little bit bad luck after my first mail here. That´s why I made a new XP intallation from Dell cd.
After windows was installed and some programs too I try to @ mark with office-programs. There was no any harm and everything worked well. But because Dell cd is only the back up cd I had to load and istall new drivers from their webpages. All categories and all drivers. And after that ( I did not check after one installed driver, but I made them all) @ doesn´t come anymore. So... my experience with computers is limited, but the reason really must be with some drivers. I don´t have knowledge how to fix it and I accept to switch EN / FI keyboard when necessary. I don´t have no choice.