Is is possible to create a new page from my own class and not from the controller?

I am trying to move this code:

var newComment = Services.ContentService.CreateContent("Comment", CurrentPage.Id, "comment");
            newComment.SetValue("visitorName", model.Name);
            newComment.SetValue("visitorEmail", model.Email);
            newComment.SetValue("visitorComment", model.Comment);
            Services.ContentService.Save(newComment);

to my own class in order to keep the controller as clean as possible, but I don't have any access to the CreateContent method, even after I tried to add different references.

I am using umbraco 6.1.6