I need to change the first field of each line of a CSV file.
I have searched a lot of info but can't out it together so I have no code to show.

Here is the CSV file it's name is scores2.csv.
Code:
121, Slim(YEL),Adkison, 91, 60, 12.5
113, Larry(YEL),Bolitho, 65, 91, 7.2
117, Mickey(YEL),Call, 80, 87, 6.1
115, Marj(GRN),Daniels, 91, 70, 17.5
114, Bob(YEL),Duszak, 85, 82, 9.2
118, Bernie(GRN),Gearald, 83, 78, 8.2
111, Gail(GRN),Hammond,  81, 60, 1.5
116, Howard(GRN),Hammond, 90, 94, 4.4
119, Sam(YEL),Jalbert, 88, 92, 6.9 
120, Ray(GRN),Lebel, 81, 79, 5.1
122, Bob(GRN),Vargo, 91, 91, 4.3
112, Doug(YEL),Watson, 91, 39, 2.5
I need to change the first field into sequential numbers.
I know I could do it by reading it with notepad and replacing one at a time but this file will grow to 100 lines.

Any help to push me in the right direction would be appreciated.