Hmmm...since no one replied, I thought I'd give this thread some attention.
However, as I am not that experienced with casting shadows & stuff, I looked for an answer in any of the previous posts.
The only thing I could come up with is:
"Getting curves to cast shadows with Q3 was done by creating brushes inside of your curves with the chalk texture. I think the chalk texture may work slightly different with fakk2. (I need to check this one)
If indeed the option on the q3map.exe -light -patchshadows does work then it would save hell of lot of time"
Not quite what you were looking for, I'm afraid.
Anyone, plz ?