To create a landmark on your PC and export it (e.g. by Bluetooth or email) to your
N95, visit
Expert POI Manager - POI conversion tool - Online POI tools from GPS Data Team
This gives you 2 methods to create the .LMX landmark file. Either you can enter the coordinates in the boxes then select Write LMX, or you can click on the map link, which brings up a Google map that you can use to find your landmark and save it as an LMX file.
Once the LMX file is on your PC, you can export it by BT or EM to your device.
This tip stays in the Notes on my device!