Hi Blossomtree, have just seen your post.you hav,nt stated which model you have, we think you may have the original silhouette. there have been quite a few upgrades since they first came out. this is a very helpful site that we think will solve your problems.....www.silhouetteamerica.com when you get into the site click "support" then software downloads. a short time ago silhouette and craft robo joined forces and became "craftrobo silhouette" which run on the silhouette studio software for which drivers are not needed. if you click on studio software download, you will get the option of either mac or windows, windows will cover 7, xp and vista.
we think this is what you need, but please check it out because we are not sure which machine you are using.
hope this helps....rod&carol