AbleCommerce Shopping Cart Software

I have built the following function to accept a user from an external system, and authenticate in AC7 (706 if it matters). This works, but I would like to ask the gurus here if you could advise if this is the appropriate way to handle single sign on. I appreciate all comments. CommerceBuilder.Users....

As a new AC implementer my first site brought a couple of requirements that do not appear to be "in the box". In my site, the users cannot shop without logging in first. I couldn't find any posts describing exactly how this was accomplished by the community so I implemented a simple technique, altho...