Hi, Jerry,
When you install any Office component from the suite, Office installs a
bunch of shared components also. The updates are probably trying to update
shared Office components that may or may not directly relate to Infopath.
Individual applications installed from the suite are not listed separately
in the Add/Remove Programs application. They do not have their own setup
executables. Office Update is not always the most intuitive or intelligent
feature of the Office family, as you can see from the multitude of postings
in this newsgroup. You can also choose not to install updates you are not
sure of.
Not knowing exactly what options you selected in the setup program for
Office (to install Infopath), I can't tell you if there was a better way to
install it or not. But what you did certainly doesn't seem wrong, and
though Microsoft doesn't generally support multiple versions of the Office
applications on a single workstation, most folks don't run into major
issues.
Honestly, what I would consider doing is installing all of Office 2003
applications at the same time so you're at the same level across the board.
To upgrade / remove older Office 2000 components, you will need to have the
original installation media for Office 2000 (an unfortunate fact of Office
2000 setup logic that has since been mitigated in later versions of Office).
As for the LiveMeeting issue, that's a new one on me. You might try
re-installing the LiveMeeting components to see if that repairs your
installation.
Since you are new to Office and Windows, are you aware of the free Knowledge
Base? It's a fabulous resource:
http://search.support.microsoft.com/search/?adv=1