Try using the "HARDTRIM" function created by Jason in this thread
and modifying it a bit.
Or you can do a series of update queries replacing 0*:
UPDATE Table1 SET Naam = Mid$([Naam],1)
WHERE Naam Like "0*";
Run this query as many times as you need it to remove all (starting) zero's. --Note For some reason i cant run this query allthough it should work.
P.S. Removing the leading zero's WILL be the start off sorting problems in your Table with this field.
Will be the result of an assending order by.... Just a reminder...