Hi Scott, It's been my experience that Jaws 12 works well with Windows 7, so you may not have to upgrade to Jaws 13 or 14. In addition, as long as you're purchasing Windows 7 Home Premium, then it would just be the standard upgrade fee for the two versions of Jaws, that being 13 and 14, assuming you wish to use version 14. I forget exactly how much it is to upgrade, but it's far less money than it would be to purchase the full product. I believe it may be something like 120 USD for each version, for a total of 240 USD, but don't quote me on that.
Having said that though, if deciding to purchase the upgrades, you might consider putting in the extra money for an SMA upgrade which will cost you another 120 USD or so. Again, prices are not exact, so take them with a grain of salt, however, if you have the wherewithal, I would recommend you do it that way, but, as I said, if you're solely going to upgrade from your current version of Windows Home to Windows 7 Home Premium, then you won't need to upgrade and can keep using version 12. Hope this helps. Scorpio For answers to frequently asked questions about this list visit: http://www.jaws-users.com/help/