Animated Rain Help

[aletter2elise]

I don't know if theres already a post for this type of rain effect, but i want to learn how to make this animation.

Like this:                                                                       And/or this:


                                                      


icon made by colleendetroit                              icon made by rainbowgraphics

I have Gimp2 and Photoshop7

I'm still new to making my own animated icons. Simple instructions are much appreciated. :)