@ symbol on Swedish Keyboard

I just swapped my UK (wired) iMac (OSX 10 6 7) keyboard for a Swedish one, in order to get the Ö,Ä, Å character keys.

However, @ has disappeared, which is just as annoying not having a key for Ö etc.

Oh, I just found @ hiding as alt+' Does anyone know how I can get @ to line up with what is printed on the actual keys - alt+2 or cmd+2 ?

Many Thanks / tack så mycket