This excerpt taken from the UN 6-K filed Mar 27, 2008.
Holders of shares or depositary receipts held via the giro system
Holders of shares or depositary receipts who wish to attend the meeting either in person or by proxy (see also below under Proxies), must notify ABN AMRO Bank N.V. in writing by Thursday 8 May 2008 at 5.00pm at the latest via the bank or broker in whose administration their shares or depositary receipts are registered. The Affiliated Institutions must submit to ABN AMRO Bank N.V. a confirmation that such shares or depositary receipts were registered in its administration in their name on the Record Date, whereupon they will receive (by post or by e-mail) an admission ticket from ABN AMRO Bank N.V. for the meeting.
Holders of registered shares registered in the shareholders register