Wine is a small program that imitates a Windows environment. Has creates a pseudo C:/ drive and a few essential folders such as Program Files etc on your Mac without actually partitioning your drive. It essentially fools a Win .exe into thinking that its in a Windows environment. Its slow and glitchy and not all Win programs run properly. I managed to get e@syfile installed but the sync process timed out everytime. So I just deleted the lot since I discovered I don't actually need any of this and can do it all on eFiling.