How can I make it look like its raining ina photo?

I really want to take a picture in the rain but theres no rain in the forecast for where I am and all I have for picture editing programs is Roxio and then of course picnik.|||To simulate rain as they do in the movies, you can simply use a garden hose. For bigger droplets and spray intensity, bust open a fire hydrant. It is illegal in most places to do that so you didn't get that from me.|||do they still make garden hoses where you're at? Hook up the water to a sprinkler... instant rain you control