Trying to run the latest gnome on woody is probably going to be pretty hard
Woody is a couple of years out now and the Sarge is going to be the stable branch soon. Newer packages are in testing (packages have been tested for the large bugs in unstable) and unstable (only means the packages haven't had much testing yet so you might run into a few errors or a package might be broken which barely happens in my experience). You can upgrade this with apt-get if you like. Look for info on "apt-get dist-upgrade".
For your problem. Did you use apt-get when you tried to install them or dpkg? If you use apt the packages are downloaded to /var/cache/apt. If you used dpkg you know where the packages are
dpkg -i /path/to/libdb1-compatpackage
dpkg -i /path/to/libc6package
This will both give the dependency errors you encountered before. Now run:
dpkg --pending --configure
It could be that this step alone works too.