Yes, our files are 100% compatible with Cricut Design Space.
No, the latest versions of Design Space size all of our files to the correct width and height automatically.
Unfortunately, no SVG compatible software exists for any of these machines. Sure Cuts A Lot version 1 and 2 once made it possible to cut SVG files with the Cricut Expression, Personal, Original and Cake, but the software was taken off the market due to a lawsuit filed by Provo Craft in 2011. You can read the case documents by clicking here. Beware of any version of Sure Cuts A Lot 2 being sold on eBay or Amazon as they ARE pirated. No authorized reseller should be selling the software at this time.
No. Cricut Design Space is all you need in order to import and cut SVG files from Dreaming Tree and other SVG sources, but it does offer design tools that Design Space does not offer and also gives you the ability to export these designs to SVG format which can then be opened in Design Space. You can get a copy of Sure Cuts A Lot 5 by clicking here.