ascii to unicode line endings

[fidtz at clara.co.uk]

The code:

import codecs

udlASCII = file("c:\\temp\\CSVDB.udl",'r')
udlUNI = codecs.open("c:\\temp\\CSVDB2.udl",'w',"utf_16")

udlUNI.write(udlASCII.read())

udlUNI.close()
udlASCII.close()

This doesn't seem to generate the correct line endings. Instead of
converting 0x0D/0x0A to 0x0D/0x00/0x0A/0x00, it leaves it as  0x0D/
0x0A

I have tried various 2 byte unicode encoding but it doesn't seem to
make a difference. I have also tried modifying the code to read and
convert a line at a time, but that didn't make any difference either.

I have tried to understand the unicode docs but nothing seems to
indicate why an seemingly incorrect conversion is being done.
Obviously I am missing something blindingly obvious here, any help
much appreciated.

Dom