I FIXED THE PROBLEM!!!
Damn, it was so simple in the end! Why didn't it work earlier?!
All I did was install Firefox, but this time I didn't match the settings with Internet Explorer, and that worked. Then, when I opened IE, it asked me if I wanted to make it my defult page, and I said yes.
SO EASY!
Now, everything else is working, too!
I read another member having a similar problem and resolving it the same way, so one such thing, so frustrating to deal with, is so easily fixed.
Lorjack - Thanks SO much for the support and help!
This case is offically solved! (Untill further problems arise)