welcome. Here's the yahoo "keyword selector -- see what people are searching for" tool
http://inventory.overture.com/d/searchinventory/suggestion/
and yahoo's 'how much is competition paying for adwords on yahoo' tool http://uv.bidtool.overture.com/d/search/tools/bidtool/
Note: you dont have to be in the #1 spot, just high enough to be on page 1 results.