R help - Dec 2002 - writing S-Plus datasets

I find myself needing to write R data frames to S-Plus (sdd) forma to ship to 
clients.  Currently I save the R data into text files and import into S-Plus 
to form sdd file.  I would very much like to skip the S-Plus stage if 
possible (for a variety of silly reasons shipping the text files is not an 
answer.)  ---  Pretty good endorsement of R eh?, I own S-plus and want to 
avoid using it in favor of R.

I would consider scriptable non-S-plus data conversion utilities.

I know that the foreign package allows one to read S-Plus files in R, but 
seemingly there is not a 'write.S' function.  

Any one tackled this issue already?


========================================Michaell Taylor, PhD