Tax by Zip Code

Hi everybody - I've searched around quite a bit on the forums and no luck so far. Any help is greatly appreciated.

Here's the situation in my county --
MN - STATE SALES/USE TAX (6.88%)
MN - HENNEPIN, COUNTY SALES/USE TAX (0.15%)
MN - METROPOLITAN TRANSIT IMPROVEMENT AREA (HENNEPIN CO), COUNTY SALES/USE TAX (0.25%)

If I don't add all those taxes to customers in my county, specified by the Hennepin county zip codes, I'm in trouble. If anyone has developed a zip code based tax system please let me know. Can't go live without it.

thanks.

Thanks for the reply Alexander - unfortunately I did contact help desk yesterday, and now I see that I got a response. Pretty funny --

Me: Hi - is there any way to add taxes by zip code?

Anton: No.

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I thought I could enter my tax information into PayPal, but amember overrides PayPal's tax settings! Help! Now this is urgent!

Use a better payment system than paypal. Not sure, but check out 1shoppingcart. I know they have an option to charge taxes. I am not sure if it would charge those individual taxes depending on those counties.. You would probably have to charge everyone tax, but hell, in a few years every state will be doing this if NY and CA get their way in court.