How to install Gnumeric Spreadsheet

Hello,
Sins almost two weeks I am owner of the N800.
It is a nice device but I have some problems with it; one is How to install Gnumeric Spreadsheet.
When I try to install via the N800 Application manager I get the message:
Application packages missing: libxau0

I see in
http://repository.maemo.org/stable/3...omparison.html
Comparison of packages in Maemo 3.1 and Maemo 3.2 free repositories
that possible the file resides in maemo-sdk-nokia-binaries_3.2.sh (2MB)

But I do not know how to get it as I am a N800 user, not a developer.

Question: how can I receive the file: libxau0.

And when I receive it, do I then have to install it via:

N800/Tools/Application manager (pull down menu left-upper side of screen) application/install from file/select application/

???
I have spend hours searched for it but did not find it.

Thanks in advance for your help in this.

Green_N