Trees aren't drawn right

[munch]

Hi

I've only just noticed this as I've only recently got a graphics card which does shading, but there's something wrong with the way shading and/or shadows affect trees. With shadows turned off, the proper 3D trees are kind of shaded, but it doesn't look right, still it's OKish. The non 3D trees come in two varieties, some of which aren't shaded at all and the other one which seems to be shaded at a random angle and nothing to do with the directino the sun is coming from.

If you switch shadows on something else strange happens. The trees cast a shadow OK, but the colour of the tree itself isn't affected by shadows at all. This means it looks very odd on e.g. Small Divide where there are trees in the shadow of the mountains, which appear on screen exactly the same as the ones which are in the sunlight - this looks really odd. What's strange is that the grass seems to be affected by shadows perfectly ok (although the grass doesn't seem to cast any shadows itself).

Is it possible to sort tree drawing out?

Cheers

Munch