Either a file hosting service like RapidShare or MediaFire, or as an attachment to the post.
Mario Tennis 64 is a hard game (especially against opponent with the power type at high difficulty levels), but you can still use save-state or play with maxed-out gbc characters, it makes the game far easier.Omg, I do not I´m to bad (or old) for this game now
Just a heads up about F-Zero X save files. Don't use a 100% save file, most of these were done with an action replay and the game has a major bug when it detects it. Mainly, the CPU controlled cars start to cheat and the game becomes impossible to win at the higher difficulty settings.