So I'm part a small business and we need our site set up so that when an item is out of stock, it can still be purchased as we can get our orders in fast enough to not make this a problem (we just tell them a different shipping estimate, which I've already put into code). My problem is that when I have an item's stock set to "0" I want it to give them a certain time estimate (5-10 days) and when it's above "0" set it to be faster. However, wp e-commerce will not allow this to them be added to the cart, because it knows that the stock is still "0." Where can I go in the code to fix it? And how should I tweak the code?