Reg openLDAP config

I hv installed openLDAP on windowsxp. Now im trying to populate it with our company specific values using java code.It is giving me the following error.

error result (53); modification of subschema subentry not supported; DSA is unwilling to perform

i have provided access previlages in slapd.conf as

access to dn.base="" by * write
access to dn.base="cn=subschema by * write
access to *
by self write
by users write
by anonymous auth

but still i get an error saying i cannot modify the subschema entry.
can anyone just let me knwo where exactly is the error??