Getting approved here at Gap.com as an affiliate is not a big deal either, as they don't require you to own a online store sort of web site. Any simple web site can link to them directly.
Once you've been approved, login to your account with Commission Junction (CJ), their affiliate program vendor, and click on Get Links. Then search for Gap links. You'll find the latest selection of their links here. Don't have to prepare the links all by yourself. Choose the ones that best matches your site design. Place them in the areas which can generate the most possible sales. Then just sit back and ride with success, as their brand name takes your revenue to new levels.