As of the update released on the 10th of August 2006, the "distributor information section" has been locked.  This is a part of the security upgrade and SecurEX.

If you require any changes to be made to the "distributor information section", then you will have to send an email to SZIT Support, with the changes  you require.   If the requested changes are approved then they will take affect the next time you renew your license through SecureX.