This sounds like an 'I'm about to throw this through the window' kinda situation. Seems like you've done everything you could to fix this, but I just wanted to make sure of a couple of things.
1. You mentioned your husband has the same phone, and it can connect to multiple computers. When I read your post, it seems like you tried your phone on only one computer, is that correct or did you try it on multiple computers with the same results?
2. Samsung Kies should have the correct drivers installed on your computer if it is up to date. Per Samsung's website, the latest version should be 184.108.40.20621_10 . I've worked with Kies in the past, and it can be kinda tricky. I've found that if I try to update through the software it doesn't work. The only way I have been able to get it to properly update is if I completely uninstall and re-install the software. Its a long process, but was the only way it would work. Check out Samsung's site for more help http://www.samsung.com/us/kies/.
3. If the above fails, contact Samsung. They will be able to assist with connecting to your computer with their software.
Let us know if you need any further help!