Desk Rad troubles


If anyone could have a magic solution for this :

My radiance installation seems to be wrong :
A clic on the ms dos "__winimg.pif anwers me that __winimg.bat is
A clic on the rview.exe answers me that DRADPATH value is invalid or
missing in registry
and a clic on winimg.exe is asking for an absent key in registry....

Of course I installed it many times, with many differents
decompression softs. All under windows 98 SE, Stand alone installation
( without Autocad ).

Hope someone can help !

Stephane from France.