new line setting

Hello,

I have 2 questions. If you could help me out, it is appreciated.:

1. new line problem
I tried DOMWriter::setNewLine(X("#xD#xA")); but it didn't work.
Could anyone tell me how I could change the new line code
so that the resultant document returned at the end of each
line?

I tried DOMWriter:setNewLine("CR-LF"); as well but ended
up likewise.

2. how can I produce DTD?
I couldn't find any samples for producing DTD when creating
XML document using DOMWriter. Is there anyway to do this
or was it (DTD itself) permanently got rid of from the
standard?

[environment]
VC++ 6.0 SP5, Win2k, Xerces C++ 2.3.0

Best regards,

Tsuyoshi Moriyama