Can't surf with Mozilla

[disciple@exis.net]

I recently installed installed "Woody".  The system is real basic at this
point, not many programs.  I then installed Mozilla.  When I startx, I can
surf using Mozilla.  By the way, I'm somewhat new to linux, BUT THIS IS
AWESOME!!! :O)  I now have several windows open.  How do I close these
windows???  I can iconify them by clicking the circle in the upper left
corner, and I can resize the window by clicking in the upper right and
then dragging.  How do I completely shut the window down???

Thanks everybody...

Carlos... (Excited about going to a linux desktop)