Printer manual brings up DVD Studio Pro

I have a MacBookPro and also have a Canon MP960 printer/copier. I want a

user's manual for the printer and have downloaded one from canoncanada.custhelp.com. There is

an English folder that I double-clicked on, then I clicked on an mpkg folder

which brought up an On-screen Manual Installer. I clicked Continue and Install

with my HD as a destination, then Install.

There is now an MP960 On-screen Manual on my desktop but when I double-click it,

it brings up DVD Studio Pro. Why isn't the manual coming up separate from DVD

Studio Pro?

I have a MacBookPro that I got about 15 months ago and it has Snow Leopard.

Thanks.