Hey hey, just added a bunch of tracks a fellow NR2003 racer was having a hard time finding.

Uploaded tracks include:

Daytona 2006 v1.35
Daytona 1988
Martinsville 2005
New Hampshire 2005
Phoenix 2006 Night (pictured above)
Pocono 2005
Rockingham 2008
North Carolina 2008 (Day)
Talladega 70_80
Watkins Glen 2007 V1.0

Head on over to the tracks page from the link bar above to download any of these tracks.