Idoc to cXML scenario

Hi,

I have a requirement (IDOC to cXML file), where i have to map PO IDOC to cXML file format. I understand from the cXML.org url that there are some DTD's freely available.

I guess the cXML file format is same as normal xml file with special format. please correct me if i am wrong.

can we use FILE adapter to convert the file to cXML file format. for example to abc.cxml.

can some one help me .

thanks.

azim