load a vismat / vray material into sketchup using ruby code?

[wawmsey]

Is it possible to load a vismat material into sketchup via the ruby script. So in this case i have written a script to draw some stuff using ruby and I now want to apply a saved vray material (.vismat) to it's faces as a part of the script so that it is all ready for rendering.
Is this possible?

If not, then what would be the best way to replace the material that is already mapped onto the faces how I want, with a vismat that has the same texture, so that the texture stays in the same place?

Thanks for your help in advance,
Matt