I want to add an affiliate bookstore to my international big board. i.e. I want my users to be able to browse a bookstore on my site and purchase books. Possibly clickbank, commission Junction or others networks will be used. I'd like to serve up different affiliate stores, depending on the location of the user. Likely I will not be using amazon, as that is not paying much. vbulletin integration would be nice. Possibly I would add an affiliate store for other good at a later stage. What software would you suggest to buy/use? Do you have any tips on this project?