taking cue from the great tutorial by Robert Czarny I have tried some experiments in order to simulate the radiosity in Vue.
The necessity is been born after to have played a little bit with 3d studio max 6 and to have seen in function the brightness Mental Ray.
The test consists in realizing a vase in glass hit from one light, trying to recreate brightness effects and caustics refraction

the first result with the values of atmosphere standard of Vue (sunshine Puff) show a flat image without variations of color and light for the presence of a glass object

A lower exposition and a darker image concur than to render the result less flat, (exposure -0,78:: light balance 91%:: ambient light 5%)

the light acclimatizes them to 5% must  be replaced from a real ambient light  (radiosity:D) obtains this result nearly adding 10 sun light with softness of 25%, extremely dark ("almost black") and with point tracking to the camera

Simply a point light in the base of vase for more shining... and place two light gel spot light (with the material of floor as gel) oriented trough the wall for simulating a little yellow reflection...

two point lights without shadows and flare in front of vase...

first image (320x240 - 1 light) time to render 1m.30s. last image (640x480 - 17 lights) time to render 3h.40m.40s.