using micrsoft excel,  I have a column filled with six digit numbers,I have
inadvertantly doubled up on these numbers two or three times, so now I have a
list of numbers four or five times as long as it should be running in to
about three thousand different numbers ,
       question..... how can I remove the numbers that have been duplicated
and finish up with one of each number,tried everything.

 Hope you can help,     regards   jim