Thank you Nicolas, I will read through that post and work on implementing.
Just an FYI on the tax issues (not yours, our government's issues). Taxing by zip code will not work in all US States, because a tax district in many cases overlaps zip codes (go figure lol).
On a positive note, however, California gives us a break by only requiring merchants who are engaged in business within a district to charge that district tax. Since my district tax applies to the whole county, i basically lucked out.
However, if I expand and create another physical sales location then that will be another story (wishing a little).
Thx again for your help and I echo others on your level of support, just make sure you keep time to live too (I have spent 30 yrs in IT so I know what you go through...)
Mike