Deleting layers

[shoman24v]

Is there anyway to delete layers in a DWG. ive tried the purge command, put everything on the zero layer, it all didnt help. When everything is on the zero layer and i try to delete layers, autocad says that the layer currently has items on that layer. I want to delete the layer no matter what, if there are objects on it, i dont care. i have a DWG that has about 9 layers and it shows about 150 in the layers box. I imported a basemap but its on one layer called "arcs". so its that layer + 8 more i created... it also wont let me WBLOCK the DWG too....