If I remember right you would have installed it to /opt or someplace in /usr, and should have another install you can access as a normal user. Seems like there was an option during the install to install it as shared or something like that. After running through the second install you should be able to use it as a normal user.
Sorry I don't remember any better detail, but there should be something in /usr/share/doc/staroffice that will provide the details. I can't look in mine because I don't have StarOffice installed.
Being new at something can make it seem a lot harder than it is, but I wouldn't worry about being embarrased. Save that for when you really mess it up