Using any search engine, you can find a representative. As with any other vendor, follow the steps nescessary to insure a good transaction. Get references and follow up on those references. Pay attention to details. This means that the date, dress size, dress style, date of delivery, etc. should all appear on your receipt.
Outlet stores are basically a clearinghouse for last year's styles.
Sometimes you can find styles that are a bit older, but it's generally within a three year time-frame. For those of you that are curious, I will be putting the address of the outlet store in my questions section. The first place to look for bridal outlet centers is in your phone book. If that doesn't work, you can always try Outletbound's search features to find out if there is an outlet center in your state or area. Consignment shops are another option.