Red I looked this up and you don't need a box as long as you have a floppy, memory card, stick, or cd. Depending upon your computer, you might already have the slots for those items.

I know you have another embroidery machine you saved designs to use so there could be a xxx or psw format in there when you unzip the file. From the instructions for the XL6000, as long as you have the design to use on your desktop, you can open the design in the software and transmit to the 6000 to sew out.

I have a Singer CE200 that sews out any format you throw at it. It is also computer dependent via a USB port (I can use any type of UBS cable I have, not just the one from Singer).

Since you already have a card you save pictures on, you can use that also.

Here is a link that might be useful: Sew Ware instructions