How can I save InDesign CS2 to InDesign CS1.
Gone through the "save as" and "export settings" there is nothing
other than the option of saving as an exchange file.
There are no other options available in the exchange window.
I cannot read the .inx files that a friend has saved using InDesign CS2

I have read some Adobe forum notes and they mention that if you
upgrade to InDesign CS3.01 you can read them, well I have upgraded to 3.01
and I can't.
(this is the saga of a client supplying some CS2 files for me to make some
simple changes - not rocket science)
Rick