Ok, if you're like me, you've been annoyed by the throngs of gas pumps in the US that insist on prepayment but, after going through all the Credit steps, spoil your efficiency because they want your zip code. I believe a couple buddies and I have found the solution. It was presented to us by a wonderful little lady behind the counter at one of these stations who provided us with a SECRET CODE. Here's how it works: You need to fabricate a zip code which will allow the credit card company to verify the billing address for your credit card. The new zip code is created using your existing postal code. For example, if your postal code is A1B 2C3 Then your zip code is 12300. See what just happened there? You take the three digits in the order that they appear in your postal code, then tack on two zeroes. Some examples: Santa (H0H 0H0) would use 00000 for his backup generator (since feeding gasoline to reindeer is illegal). Mr. Harper (T2V 5A8) would use 25800 when filling up his Camaro on a trip to Vegas. The minister of international trade (L9N 1M7) would use 91700 to fuel his pickup carrying softwood lumber. You get the idea so now go and try it and let us know how it worked out for you. CAVEATS: 1. We only had success with Visa but in fairness only tried MC once. 2. We only tried this in Washington State - as that's where we were before coming back across the border. 3. If you use this for criminal gain, karmageddon will find you.