This is quite strange. What EXACTLY are you trying to do?????
S[aring the user a few mouse clicks is a fine intention, but what you seem to be trying is beyond that.
Why on earth would you want to force Word into opening without the normal blank document? What is the big deal here? I don't get it.
Why do you want to remove the the New (blank) document button. Yes, you can remove it, absolutely. But it is removed from Normal.dot - if that is what you are working with. YES, you can have it removed from a template. Heck I have a template that has NO format buttons at all. No Font, no Size, no Bold etc etc. Just tabs of the available styles. Yes you can force customization of the oolbars.
However, it takes some code, and more importantly, it takes very thoughtful design. Sparing a few mouse click does not cut it for the work involved.