Its best to post it all. The key areas to post are sound, display, pc specs etc. It might be an idea to try and reduce the graphical settings you are playing at.
And...is this happening with 1.5 patch? If not, grab 1.5 right now ( http://support.lucasarts.com/patches/EAW1_5.htm
)as there were issues with old saves and 1.4