You could also do a 'Search' of the forums as there is a lot of info regarding NFSU 2 on this site. Many people had problems with this game when it was first released! Sound like a graphics driver problem to me, or a sound driver problem? 95% of the time it usually comes down to one or the other.
HINT: Search button is at the top of the page between the words 'New Posts' and 'Quick Links'.
BTW, welcome to Fileforums, be sure to read the forum rules.