0000950123-01-000576 SC 14D9/A 1 20010124 ACNIELSEN CORP 0001019878 8700 061454128 DE 1231 SC 14D9/A 34 005-47591 1514481 177 BROAD STREET STAMFORD CT 06901 2038344200 177 BROAD ST STAMFORD CT 06901 ACNIELSEN CORP 0001019878 8700 061454128 DE 1231 SC 14D9/A 177 BROAD STREET STAMFORD CT 06901 2038344200 177 BROAD ST STAMFORD CT 06901 SC 14D9/A 1 y44371a3sc14d9a.txt AMEND #3 TO SCHEDULE 14D-9: ACNIELSEN/ACNIELSEN