How to set gnome up, so it only obeys simple mouse click

[bqz69]

How to set gnome up, so it only obeys simple mouse clicks for opening folders, 
files and executeables etc.

I need to set gnome up, so there is no "mouse over" reaction.

I am used to kde 3.5, and try to use gnome, but each time I place the mouse 
cursor anywhere, something happens, that is windows opens and closes so 
quickly, that I cannot reach to respond - or a folder is created on the 
desktop (when I try to click right mouse button).

I have tried to read the gnome help manual.

I am a completely newbie to gnome, and have no control over the mouse, and is 
very confused.