How can I set up county-based taxes?

[ajbest]

I am wondering if there is a way to get more specific when charging sales tax. I am setting up a store based out of colorado and need to charge taxes for orders within the state. HOWEVER, Colorado has different sales tax rates through different countys and citys.
In my case the store is based in Boulder CO. For orders shipped to else where in Colorado I would only need to charge the state tax. for orders shipped to within Boulder county I would need to charge both state and county sales tax. and finally for orders shipped to within the city of boulder I would need to charge all three, city, county and state sales taxes... This may be way too complicated but I figured I would ask....
Any thought on how to handle this situation are welcome. Thanks, gliffen.com

[stevesh]

Not exactly the same situation, but it may give you an idea:

http://www.zen-cart.com/forum/showthread.php?t=90077

[point4design]

I know this is an old thread, but I need to do the same thing for a Colorado store. Did you ever get this working? How?