Just in case you are not sure what to do with the files from the database and then <a href="http://www.boys-of-summer.com" target="_blank">www.boys-of-summer.com</a> I thought I'd try to clarify
Put the database files into a folder named stats, for example, and then place either of the updated files from boys of summer in the stats folder, overwriting where necessary. When you go to creat your historic league it will ask you the location of the database. Just type in C:\stats, or whatever you named the folder, and you'll be all set