We can give you advice but we areunable to write letters for you.
Do you actually want advice or areyou looking for someone to write the letter?
It is of course possible and anysolicitor will generally do such a letter threatening a court application foran injunction and costs unless the accusations are withdrawn and unless theycease and desist.
I can expand further about whatis liable on what is slander and the effects et cetera if you wish but as Isaid, we are unable to write letters for you
I am off-line now until tomorrow but will pick this up then.