> I've already e-mailed you about a Windows solution (www.atrex.com), but
> I  wonder if OSCommerce at www.oscommerce.com would work for you.
>
> Although designed as an online shopping solution, the developer version
> will  create invoices and handle inventory as well. Both versions (dev
> and stable)  handle taxes and shipping. If you plan to sell online as
> well as direct,  OSCommerce might work for both.
>
> Coding your own solution in SO or OO might take alot longer to get
> right.

If you want to develop your own solution very quickly look at GNU
Enterprise ( http://www.gnue.org ).  It doesn't have a shrink wrap
solution ready yet, but certainly VERY quickly you could custom roll what
you are trying to do with Star Office only with a relational backend.

-Derek (gnue biased)