To make a bookmark that has an icon like the ovi you have to do a little more...
At your own risk!

I just made a new *.desktop file in this directory:
/usr/share/applications/hildon

with following content:
[Desktop Entry]
Encoding=UTF-8
Version=1.0
Name=tana_ap_ovi_store
Comment=Google Maps
Exec=dbus-send --print-reply --dest=com.nokia.osso_browser /com/nokia/osso_browser/request com.nokia.osso_browser.open_new_window string:http://maps.google.com/maps/m?
Icon=general_gmaps
Terminal=false
Type=Application
Categories=System;TerminalEmulator;
X-HildonDesk-ShowInToolbar=true
#X-Osso-Service=xterm
X-Osso-Type=application/x-executable

This makes a new icon in the more folder with my own icon and directs me to google maps.

I hops this helps you a little bit...