Rob Chatterbox

I have no clue. Like I said I am new to all this. The name of it is untitled.blend is there a certain way I am suppose to save it?

I am was wanting to make font in Blender that will stick out. I made the font by just adding text and then rendered it and saved it onto my desktop. I then went on SecondLife and tried to bring it in as an image but when I go to upload it. It wont show it as an image. I am very new to this all. What am I doing wrong?