Perfume spray thingy won't work, any suggestions?

[Isthatajoke]

have just been reading the NY resolution thread and the mention of perfume has reminded me that I have a 3/4 full bottle of prada perfume that I like very much but which I can't use as the pump doesn't seem to be working. When you push down nothing comes out. I know it is slightly random, but has anyone got a miracle suggestion?