VTP custom textures for water

And another problem...I want to customise the water a bit more accurate rather than using water class (because that looks really blocky) by using VTP polygons. I'm assuming that I should be able doing this by putting the polys into layer 0-3 and referencing a water texture (say 055b2wa1.bmp). My final bgl crashes in FS2004. Any ideas what's wrong? Anyone knows if I can reference a water texture by number rather than file name?Also, I just browsed through the forum, and found that this may harden the water. Is this so (this approach would be useless then)?Cheers, Christian