angle on wall

[dzcook]

at the shop i want to put up some 20 mm alum angle for displaying empty dvd cases they will be held upright and in place by spring wires was going to drill and ( rawl ? ) plug them in place think this would be best but its old brick and render wall so any tricks not to damage the wall ?

also has been mentioned that this wall is the dividing wall between my shop and next door and may be a fire wall so might not be able to fix anything to it by drilling is this right ? is a seperate building and has its own side wall just built right up against mine ?
in which case can anyone suggest any other way of fixing the angle thought of glue but would i need to remove all paint etc under where i need to fix for good bonding ? there wont be much weight on this angle
any way thanks to anyone who replys
happy new year to all