there is finally an rpm up for gnumeric-0.65 on www.rpmfind.net. Getting it to install took several trips back to rpmfind to fill in newer or missing rpms. Beware! the liconv and libgal7 ximian rpms installed all their stuff in /opt/gnome instead of /usr like a sane rpm should. I made /opt be a symlink to /usr, and then symlinked the libraries in /usr/gnome back to /usr/lib.
My main spreadsheet program used to be the one from star office, but it was annoying to put up with star office's HUGE memory footprint just to get a spreadsheet. Gnumeric is much smaller and faster.