Sally, i have 4D, customizer, and Digitiser Pro, plus Sewwhat Pro and iconizer, I have them all loaded on both my laptop and my desktop. I am not sure if 3D needs a security dongle like 4D, but both 4d and digitiser dongles go on to both computers with no problems. I checked with my dealer and he said that it is legal. The only program I can have on one computer only is Deduper because I only purchased one licence for one computer because I thought I didnt need it on both. hope that helps Ruth

Sally~I would think that since both of the computers belong to you and you are not sharing the software with anyone else, it is ok. But I'm sure someone with more knowledge than me will come along and give you more help on this. ~Nancy

I have mine on 2 laptops. The one is in my sewing room to work my embroidery machine. The other is in our livingroom so I can design and work on when here and not stitching. I just bring my dongle down to this one and work away, saving my design to input on the other computor when I want to stitch it. Hugs Lynn

The 3D can be uploaded on more than one computer - actually I have it on two - as long as you put your dongle in the one your using it works. Don't know if 3D works with Vista, one of the reasons 4D superseded it was Vista.

I installed Enbird 2008 on laptop and desktop, but I think I remember reading something in the conditions of 2010 saying you could not - I installed it on my laptop only - the desktop still has 2008.

Computer savvy I am not but looks like u are getting the info u need. *

I have 3D & since it meets my needs, did NOT want to upgrade. However if you try to install it, it will not install on VISTA. HOWEVER, you CAN install it as "XP compatable." Now, how that is done I can't tell you as my son in law helped me install mine! BUT surely someone can help you. It works just fine with my VISTA. As to the dongle. You do need the upgrade for your dongle, which you can down load from Viking..or at least you used to be able to. HOPEFULLY Jan Henning's site is still open as she did pass away recently. go there & she has very good instructions on how to do all this. See if you can print it all off to follow instructions better. If not PM me & I'll see if I have those directions on how to update that dongle. I also suggest you get one of those little connector thing that you put your dongle in & THEN put that into the USB port of the computer..you do NOT want to damage that dongle as it is not replaceable any longer. Good luck. Her link in below.

Thanks to everyone this is such a great site with help available when you need it. Sally

you can put embird on both