Ripster: That's not a stupid US keyboard. That's a damn sexy US keyboard that is.
Myself, I use the [ and ] keys for å and æ (corresponds to å and ä in Swedish) and the VK_102 (which I put in the old 'B' key position!) for ø (corresponds to Swedish ö). The ø is the most common one of those so it's not on AltGr mapping.