How or where i can see all the avaliable Pictograms in Portal
which are displayed in the dropdown Pictogram menu of Iview or worksets
You would find those under ".../j2ee/cluster/server0/apps/sap.com/irj/servlet_jsp/irj/root/portalapps/com.sap.portal.navigation.mimeservice/images/"
For other public images in the portal, look under "/etc/public/mimes/images/pictograms" in Content Admin->KM Content
Hope it helps,