Linking Blender Files

Ronin

don't know if this question was here before, didn't find it.

in Blender i can "link" files, so Objects are not realy in the Scene.

My Problem: can't move those Linked Objects. Blender tells, it can't edit a linked one.

I Want to use this to link the same Building a few times and to remain in a "editable" scene, without getting my Computer stuck, while simply moving an Object or like this.
so, different Parts of the Scene, for example Starship, Building, Road and so on should be in an own Blender-File to be detailed further even while inside the Scene which i want to render.

(why can't i post an sfm-internal link in the wyswyg-editor window correctly ?),
CityThread:
http://www.scifi-meshes.com/forums/3d-wips/2952-original-ships-6.html

thanks