Thanks BrunoB, I found the problem, & NR 2003 is running great.I think it should be possible for you to find a Nascar 2003.rar somewhere out there.
I have it somewhere on my PC but dont need it because I allready have 2 original NR2003 CDs.
If you find the Nascar 2003.rar you dont need a cd because a NO-CD launcher is included.
To get more info about installing NR2003 on your Win7 check srmz.net and the FSBracing.com out.
Both places have experts that probably can help you.
CatsAreTheWorstDogs NR2003 runs pretty brilliant on Win7 both with and without CD.