Hi and Welcome!
at first, ASPI is not needed at all for at least 10 years, apart from some ancient applications.
Secondly, Nero 7 is not compatible with Windows Vista and 7.
Either you need to buy the upgrade to Nero 9, or use another burning application.
A good solution is ImgBurn. It works with Win 7 (including 64bit), and it is very reliable. The best: it is free.