Go to  http://redux.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi and click on "browse" and then find your image name, click on it and then click "open". Now "press to view" and wait for the next page.

When the page appears, click on the "annotate" tab up top and again wait for the next page. Scroll down and set these options - "gravity" to "center" and "offset" to -50-25. Depending on where you want your text and the size and length of your text, you might have to adjust these coordinates. Keep in mind that the far left number moves the text to the left and the number on the right side moves the text up and down.

My text will be to the left of my image, but if you'd like the text to the right side, change the left number to a +. (For instance, on mine I would change it to +50-25). That will keep the text at the same height -- it just moves it over to the right.

Next, type in your text color for "fill color". Or you can actually click on the words "fill color" and a chart will appear for you to pick your color. Just remember the name and "x" out of that page and you'll be back to the page where you put in your color choice.

Now, put in your "point size". I chose 32 point for my image. Also, choose your font style by clicking on "font". A page will appear showing the different fonts. When you find what you like, remember the name and then click your "back" button and you'll be on the page to select your font.

Scroll down to "rotate" and put in -25. Remember, these coordinates are for my image. You will have to adjust them for your image. Also note, the "-" sign moves the text upward. If you wanted it downward, change it to a "+" sign. The downward text would work great if you were working on the right side of your image.

Scroll back up and "press to annotate" and wait for your image to appear. If you don't like the placement, just click your "back" button and try some different numbers. When you have it like you want it, click on the "output" tab up top and then wait for the next page.

Now "press to output" and again wait for your image. When it appears, double click and wait for the image to come up on a page by itself. Then, just right click and "save" to your computer.  If you ever get an error message or the image won't save correctly, go back to your finished image and right click and save from that page.

Here is the finished image -