Ok, now it works, and with rather good results as you can see. Thank you.
I wonder how many hours/days woúld I have wasted if I had not got help?

I downloaded 1.48.68 and made a little progress. Now it looks like this!
Maybe it is time to read the manual?

(I use ca 20 program and have to read them all. IRender nxt & Maxon both show acceptable result "out of the box" without having to tweak parameters. I rather spend my time with the Cinema 4D manual- thank you)

Ok, here is the model (9 MB).

http://eu-se.com/su/vray_example.skp

Here is a screen shot of the model. It has 2 UV/texture maps each 4096x4096 px.
As you see Sketchup shows the model correctly.

But if I render I got the second result Do I have to map the texture in any way?
The IRender nxt rendered it on the fly without problem . (But not with the same quality though)

V-Ray Version 01.05.30

I am completely new to VRay, I have only one question.

1. If I make a fast model using Sketchup material VRay render it without problem.

2. Likewise there is no problem with VRay material.

3. But, if I import a model with UV & textmap (Via 3ds or COLLADA) Vray ignore the material and shows only a white surface. What am I doing wrong?

?