I have a Big Fish game account as well, and when you activated your game you should have receieved an email stating * thank you for your purchase* type thing, halfway down the letter, is a code and instructions on how to download in case you need to and yes you get 4 free reinstalls and it doesnt use your original key number, you use the code thats in the email. and you CAN download into another computer as long as its of your personal use, i have two computers as well one for my daughter and i recently put it on hers, you are allowed, when you are downloading it, it says allready paid, and then asks you if it is from formatting or crash issues or a different computer, and it works just fine. if you have any difficulties just pm me and i will help you step by step, ive done it several times now with different games for both of our computers