I want his MSN e-mail, sucer!

Also, it is very VERY unlikely JJ2 cant start becouse of a level. I suggest to remove everyting you added to the game before the first time it didnt work and try again, or otherwise re-install it. When it doesnt work then too, delete some things you installed recently and try again and if it doesnt work by then, buy yourself a new computer or format it!