Hi J

If you create the .ashx in your website project, then the handler will be hit if you request the path to that file, without configuration.

The logic/code the handler then executes could then be called from the class library project

    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        context.Response.Write("Hello World");

        var mycustomservice = new MyClassLibrary.SuperDoSomethingService();
        var stuff = mycustomservice.DoOrGetSomething();
        //etc
    }

With regards to handlers, I am not sure what you exactly mean with "I created a node within Umbraco".

In order to call your .ashx handler, Umbraco should not process your handlers path the default way (searching for a content node).

To prevent Umbraco processing that path, you need to add it to the umbracoReservedPath in the web.config file:

<appSettings>
    <add key="umbracoReservedPaths" value="~/umbraco,~/install/,~/handlers/" />
...

is working on a reply...