# apt-get install -t sarge-backports openoffice.org
Reading package lists... Done
Building dependency tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
  openoffice.org: Depends: openoffice.org-base (> 2.0.3) but it is not going to be installed
                  Depends: openoffice.org-java-common but it is not going to be installed
E: Broken packages
debian:/home/cap# apt-get install -t sarge-backports openoffice.org-base
Reading package lists... Done
Building dependency tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
  openoffice.org-base: Depends: java-gcj-compat but it is not installableor
                                j2re1.4 but it is not installableor
                                java2-runtime but it is not installable
                       Depends: openoffice.org-java-common but it is not going to be installed
E: Broken packages
debian:/home/cap# apt-get install -t sarge-backports java2-runtime j2re1.4 j2re1.4 java-gcj-compat openoffice.org-java-common openoffice.org-base
Reading package lists... Done
Building dependency tree... Done
Package java2-runtime is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package java2-runtime has no installation candidate
debian:/home/cap# apt-get install java2-runtime j2re1.4 j2re1.4 java-gcj-compat openoffice.org-java-common openoffice.org-base
Reading package lists... Done
Building dependency tree... Done
Package java2-runtime is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package java2-runtime has no installation candidate
debian:/home/cap#