how to return .xml file from web service?????

[mac]

Hi guys...

I have one problem.... I have one web service,which interact with
database and using that data,it creates one .xml file. Now I want to
return that file to client.But when I rty to return that file runtime
error occurs. Something like JAXRPC1.1 does not support...

Can anyone,please tell me how I can fix this problem?

Plz Help me out.....