OK, just a few things to reinforce what cLFlaVA and Tony have said.
Firstly if you have MS Office the normal.dot is likely to be in the "C:\Program Files\Microsoft Office\Templates" folder.
Secondly if this is the case and you don't really save any autotexts or autocorrects simply delete this normal.dot and restart Word. This will automatically create a new, clean normal.dot template for you.
Thirdly if you don't want a document opening when you start Word, right click on your Word icon, select properties, and at the end of the target string type " /n". This is the switch that stops Word opening a default document when you open Word. If you find that this box is greyed out, delete the icon, find the Word .exe, create a shortcut, move it to where you normally have your icon, and then add the switch.
Asjeff