Can you see the "Control Panel" link at the top of every page? You need to go there to manage your gallery and should have been given access to the control panel when your gallery was created (it is the last link in the black bar). If you don't have access to the control panel, please contact the admin of the site.
Gérard
CorelDRAW Graphics Suite X4 (Service Pack 1)
Corel DESIGNER Technical Suite X4
OS: Windows Vista Enterprise / CPU: Intel Core2 Duo / Memory: 2 Gb RAM / Graphics card: nVidia Quadro NVS140M