Hello and welcome
I know the feeling as I had a severe sleep deprivation myself when I started playing SH III. After I downloaded GW I forgot the meaning of sleeping
.
As the others said get the mod enabler it's really useful and easy to use. You can add almost any graphical mod to GW without any problem. I am using Fubars' skins, 3D waves mod and Home Fleet skins. If you need any help understanding what each mod is doing check out this thread
http://www.subsim.com/radioroom/showthread.php?t=78792
Good Luck and Good Hunting