vb 6 DataReport

hi,
I made a database application by VB 6 and I have two problems:
1-I cannot find a way to have one field in my Data report with serial numbers (1,2,3) and in the same time these number should change automaticlly if I add or delete any record
2-I have to messages when I install this application “An error occurred while registering file MSADO20.TLB” and the message for “SIMPDATA.TLB”
please help me