Add in or plugin for website

I am not very technical so I hope this is clear. I have a website on which I would like to be able to sell access to an online profile. The online profile is done on another site owned by someone else. I can bulk purchase passwords which give access to this online profile. I would like to have an automated system of allocating these unique pre purchased passwords to people after they have paid me. So I would like some code or a script that does this. I am not really sure how to do this but I thought I can enter the passwords into a database as I pre purchase them so it is really the automatic allocation after selling them I am after. ? Other info: The shopping cart system I use is 1shoppingcart see… <[login to view URL]> ? this is also the auto responder I use as well , I use Pay Pal to collect the money which is done via the 1shoppingcart. I can on my site which I have designed on Xsite pro2? ? I can add HTML code to any page ## Deliverables I am happy to be advised as the best and simplest way to do this. I also when it works want to be able to add it to a similar shadow website I have as well.