Estimate UPS by Billing Zip Code problem

I have looked for an answer to this question without luck - so I am apologizing in advance if I missed it.
My UPS module is working great (I have the setting in the UPS as billing address basis) ,
however, when looking for an estimate before logging in and entering the billing zip code the system estimates UPS shipping from my zip code and not the billing zip code (i hope I have made this clear).
Is there a way to enter in the little estimate UPS box another field asking for Billing or Recipients Zip Code.
My site createadesign.net
thanx
Rufus in Del Mar, CA

Reading through my post from a couple of hours ago regarding Estimation of UPS rates, I don't think I was clear enough, in fact re-reading the post I dont understand what I needed myself,
so I would like to spell out my problem in fuller detail:
I am in sunny Del Mar, CA; my customer is in New York but organizing a function in Los Angeles. Most of our vendors are in New York. Customer needed product in LA in 3 days from New York so she got an estimate of UPS 3 day air from my site. The rate shown was from Del Mar, Ca to Los Angeles, CA (even though I have the UPS module set to billing address) where in fact product is coming from New York NY.
Question: how can I set my venue for ups billing as New York for UPS billing purposes so prior to customer entering her billing details, an UPS Estimate Shipping Costs chart will give costs from New York to customer zip code?
Hope this is clearer than mud?
Rufus in Del Mar, CA

Not sure I understand but Zencart (and the shipping estimators) use whatever zip code you entered in Admin - Configuration - Shipping/Packaging as the 'from' address.

What I don't understand is why, if the customer is shipping something from New York to California, she's using you at all. In other words, why is something being sold from your store not shipped from your address ?

It's a drop ship order....
Rufus

Bingo Stevesh; simple solution
Thanx for that
Rufus