add a store to magento. secure the site add a form

I need to add a second store for a fund raising site. I have a store already set up and I need to add a second store to sale raffle tickets. the store will have just one item but you can buy as many as you want each ticket will cost 5 USD. the stores will use the same payapl account for each of the transactions. I'll need to get both stores secured. I have an EQUIFAX SSL ready to install. The store is Magento. I need a way to keep the two transactions seperate. Other than that the store can look the same. I would also like a PHP form set up to register for a meal. the form should look like the image in this post. the registration is for counting purposes only so I would like it as a seperate page and not part of magento. The registration should write to a table in the mySQL DB. The form should be made to prevent duplicate registrations for those that click submit two times accidentally.