From reading the directions, here is how I would do it. (Wish you had included row 1) The previous row should have had a chain 3. At the top chain of that chain 3, make 1 sc. Then chain 3 and make 3 dc in the same place or stitch as you put the 1sc. I have never made this stitch. Just trying to figure it out for you.

The sc goes into the ch 3 space. Trust me. I have done this stitch many times.

You know, I didn't think to ask whether you were doing a straight box stitch or a diagonal box stitch (like a shawl). If you are doing the diagonal and will be increasing at the end and beginning of rows, then my instructions are correct. You can see how it is done here:

Here is a link that might be useful: diagonal box stitch.

Thank you, thank you, thank you!! I didn't log on at home and waited until I got to work this morning. I am amazed at how wonderful you all are...and you all helped me to understand what the heck I was doing wrong. You know when you're just starting to crochet everything seems so difficult. But after you get the hang of how things should "look"....it seems to fall into place.

Thanks so much Donna...I loved this WEB site! I'm making copies of the directions as we speak.

~Susan