So I tried with open office calc, and was extremely overwhelmed. I am trying with DB commander now, in the tools tab there is a statistics option. So I clicked on it and found the column for birthdates, I tried to subtract 50000 thinking that would make players in this roster file 5 years older but.. no dice. I'm sure I might have done something wrong, but I have backed up the necessary files.
So what I wanted to ask, is how would you proceed when trying to alter (in this case subtract) a value from a single column in the player.dbf? I tried an age-fix in the downloads section but when reloading the roster I see that their ages are still calculated the same.