Cool cheers I'll take a look. Found what I was looking for in log4net too.
Annoyingly we've started using Castle Logging Facility which only seems to take a string to an xml file! So may have to consider doing it all via DSL and generating our xml configs as a pre build step.
    private static void ConfigureLog()
    {
        var root = ((Hierarchy)LogManager.GetRepository()).Root;
        root.AddAppender(GetConsoleAppender());
        root.AddAppender(GetFileAppender(@"d:\dev\huddle\log\Huddle.Sync", "standard.log", Level.Debug));
        root.AddAppender(GetFileAppender(@"d:\dev\huddle\log\Huddle.Sync", "error.log", Level.Warn));
        root.Repository.Configured = true;
    }
    private static FileAppender GetFileAppender(string directory, string fileName, Level threshold)
    {
        var appender = new FileAppender
        {
            Name = "File", 
            AppendToFile = true,
            File = directory + @"\" + fileName, 
            Layout = new PatternLayout(_pattern), 
            Threshold = threshold
        };
        appender.ActivateOptions();
        return appender;
    }
    private static ConsoleAppender GetConsoleAppender()
    {
        var appender = new ConsoleAppender
        {
            Name = "Console", 
            Layout = new PatternLayout(_pattern), 
            Threshold = Level.Debug
        };
        appender.ActivateOptions();
        return appender;
    }