Do you have any software for your bernina? If not you will need some to change the format to ART (I believe it is ART?). The 730 takes a USB stick too I believe. Your can get a 30 trial of Embird at embird.com and get the iconizer so you can see the design on your pc. Just change the designs to your format.And save them on either CD's or USB stick separately from the one you use in your 730. Your machine can only read so much.
I have embird and explorations software and that is how I do it. I have the 640 and use a USB stick with mine, but my format is EXP. The 730 is really a nice machine and you will love it!