I had som problems getting this to work.
I just flashed my device to ensure nothing else was making troubles.

I started with installing
libart-2.0-2
libpcre3
With no problems

Then ran:
dpkg -i libgoffice-0-6-common_0.6.3-2_all.deb
dpkg -i libgoffice-0-6_0.6.3-2_armel.deb
I ran into depenency problems with this, so I hade to run:
apt-get install libgsf-1
Then run the last:
dpkg -i gnumeric_1.8.3-5maemo1_armel.deb

But Now it seems to work. atleast the program start up!