Eh, this isn't how the auto increment field is to be used.
To get the total number of records you have, you can do: SELECT COUNT([your ID field]) FROM [your table name]
To count the rows, I'd recommend just using a counter in your while() recordset loop and print the counter for each row you print.
For example:
$rowcount = 1;
while($row = mysql_fetch_array($recordset))
{
echo $rowcount . '. ' . $row['myfield'] . '<br />';
$rowcount++;
} // end while(...
Something like that...