How to get Keyword suggestion tool to check for USA keywords

UK based web business trying to advertise to USA audience

[centime]

Hi

Had my overture/ysm account for a while an always targeted UK market,

Thing is, I am trying to appeal to USA market an I am sure Keyword tool is only shows me UK search based results

Seearches for strictly USA keywords gives very low figures comparatively

If a YSM advisor is here, an answer would be really nice

[handsome rob]

If inventory.overture.com is not sufficient, I'd suggest using a 3rd party solution such as WordTracker or Keyword Discovery.

[centime]

I tried that yesterday, but it seems to have vanished

but, now its back , Ha!