Applying two or more textures to the same object

Hi all.
I have an object that I have two textures for - a colour map and an alpha map. I've been experimenting with the texture flags, but I haven't got very far.

Could anyone give me a brief explanation of how to put the two textures together to give a model with both colour and alpha?

Thanks in advance.

You don't load them as two seperate textures. Tga texture format supports the alpha channel. In your paint program load the color map and then load the alpha map into the alpha channel and save it as a targa. Then in Blitz, just set the alpha flag on.