I don't know a lot about bikes, but I am perfectly capable of putting in a new part, if I have the right one. I've repaired my car, my motorcycle, and any number of other things. It doesn't make me a bike expert, but I know I am handy enough to install a few parts on my own bike. really can't understand why you can't help a person out with a part number or at least narrow it down to a bracket standard.

As far as I can tell there are about a dozen standards out there for Bottom Brackets:
BB90/BB95, PF86/92, BB30, BB30A, PF30.... and the list just goes on. I cannot tell how any of what you have said helps me narrow it down to the right standard. Are you saying a square spindle 113 mm long fitting in a 68 mm shell is exclusive to one of these?