You can write your own customer trace listener and add this listener info to WCF application configuration file, WCF will send all the trace information to your custom trace listener class also

 

Please click on following link to download this sample

http://blogs.msdn.com/madhuponduru/attachment/647429.ashx

 

More Info:

 

http://blogs.msdn.com/madhuponduru/archive/2006/05/18/601458.aspx