Try this.
*ahem*
TEXTURING IN XSI MODTOOL 6.0
1. Make your model.
2. Select your model (or the part of it you want to texture), and on the “
create” toolbar on the left, select:
Textures>Unique. Close the resulting popup.
3. Now on the top toolbar, goto:
Render>Get>Texture>Image, the texture editor pop up will now appear, click on
New and navigate to your texture.
You should now see your texture on the model, it won’t look right, but we’ll get to that.
4. Close the popup, and press
Alt + 7 to bring up the UV editor, You can now edit your model’s UV’s to properly fit your model.
Repeat this process as many times as needed to texture your model.
It will take time to master the UV editor, just play around with it, it’s the best way to learn.