Are you talking about
http://enbdev.com/download.htm
by chance? I'm not sure if that would work with SH4 or not. It would be interesting to try it. A fellow just a few weeks ago was getting the sun, when near the horizon, shining through objects that were supposed to be solids. I seen a couple instances of search lights doing similar, so the AA may need tweaking under certain circumstances. If you are familiar with the mod, and try to do that, let us know how it goes. Don't be surprised though if it doesn't trash things on you... Carry on!
