here's a way:
1. go to the folder where's the old save (My Documents\NBA Live 2003\saves\000 for an exsample)
2. open players.dbf with
Microsoft Access
3. open the players table, find the players you want to copy
4. select the row(s) by clicking on the box(es) in front of it(them - with Alt or Ctrl), copy
------------------------------------------------------------------------

You
must leave the file open in Microsoft Access
------------------------------------------------------------------------
5. go to the folder where's the new save (My Documents\NBA Live 2003\saves\015 for an exsample)
6. open players.dbf with
Microsoft Access
7. open the players table, select the last row (the empty one with a *)
8. paste
9. now check the player IDs - if they're bigger than the ID of the last player then there's no problem

But if they're smaller then you must change them - if the previous player's ID says 1085 and your's ID is smaller the just change it to 1086,
the next one to 1087 and so on...
10. close the files and youre done

also delete the new .mdb files in the folders
