Not exactly sure what you're trying to do... Do you want to trim your clips outpoint? Move the CTI (current time indicator) to 1 frame before where you want the clip to end. alt ]
If you want to trim inpoint, alt [
Do you want to trim your comp length to the length of both of your clips? Select both clips, ctrl-alt-b to set the work area to the length of your clips, and then composition/trim to work area (or whatever it's called).
>Just another question though... after the split and after deleting the
>last part of the clip that i splited, is there anyway of removing that
>lightish green that it leaves behind after the split
Not sure what you mean. The ghosted/ dulled areas of the clips always represent its original soiurce duration even after parts of them have been removed. They should however not have any influence on the actual rendering and not show up. Are you sure you are working in the composition, not the layer viewer?
Here we are in 2012 and I have the same problem, but my Mac AE has no Control-Shift-D shortcut and I see no command to split a clip in two from the CTI. My goal is to use the first 10 and last 10 seconds of a 30 second clip but skip the middle.