Spectral Reflectance values to Radiance format

Hi group,

I have some spectral reflectance measurements of different materials used in a simulation model we have built and I want to tranlate this values into Radiance values.

I use desktop Radiance in w2k & cygwin radiance.My scripting capabilities are very limited, though, and I can't make the "spct2xyz.csh" script explained in "Rendering with Radiance, Chap. 5 Lighting Analysis" work.

Can somebody help me out or point me in the apropriate direction to get usable radiance rgb values from this measurements?

Thank you in advance.

Iv�n Pajares