I mentioned Anatoli's campaign yesterday. Here are a couple different options for creating campaigns:
One at Mark's Legends and Legions about a HOTT campaign
Here's the search term Campaign for Tabletop Diversions' blog
where he links to
The Saxe Bearstein post on a campaign system that I may use someday for an imaginary Far East campaign based around the Sengoku/Imjin war period.