Desktop radiance problem

I have windows Vista.
I installed Autocad2000 and then Desktop Radiance 2.0 but it does not work
neither with Ecotect neither in Autocad.
When i render with Ecotect the messages that I attach are appearing named
"lathos_eoctect_radiance" and "lathos_radiance_Ecotect" and in autocad the
massage named "lathos_radiance_autocad" appears.

Could you please tell me what Am I doing wrong?

regards,

mariam