Some of the Pantograms software programs require a USB dongle connected to the computer. However, the driver for this dongle has to be installed before you install the software or connect the dongle. I suspect you may not have installed the driver or the dongle is missing.
Assuming that the dongle is connected:
Close your embroidery software program and all of the Pantograms software, including the Network C software, on your computer and remove the USB device. Put the software install CD into your machine's optical drive. (If your new machine doesn't have an optical drive, get a USB optical drive or copy the files from the CD to a 1GB+ USB flash drive at another computer with an optical drive.) If Windows XP starts the autorun routine for the CD, click Exit. Then double-left click on My Computer to launch File Explorer. Go to the CD drive (or USB drive if you used the work-around) and double-click on it. Open the Rainbow Drivers folder and then open the XP folder. Double click on the program: setup.exe . Choose Complete install as the program executes. Then close File Explorer when the install is done. Now insert the USB dongle and follow the on-screen message about New Hardware found to install the Rainbow driver from C: .
If you do not see the New Hardware found message, try putting the dongle into a different USB port. (Make sure to avoid USB hubs - they can add to USB device issues.) If the dongle doesn't work at any port, you may need to use a different method. There is a flash reader available for connecting a USB flash drive to the Toyota 830 here: http://www.plrelectronics.com/lab/usb_reader.php
. (Scroll down to the Toyota machine section. This isn't cheap but it is cheaper than some of the newer embroidery software packages.)
I hope this helps.