please put in the entire command, still in the learning process, it's why we need help
DPKG won't do you any good without a software-package.
I will however explain how to install with DPKG, but unless you've got a .deb it's no good for you.
Code:
dpkg -i path/to/your/debpackage
After the -i flag, you simply specify the path to your .deb file and run the command as root.
As for reverting to the original hildon-desktop, try running the following in your x-term;
(I think hildon-desktop is in the default repos, I can't check for myself right now so if anyone could confirm this I'd appreciate it.)
Code:
sudo gainroot
apt-get update
apt-get upgrade
You'll see a lot of text appear, scim through it until you find a few lines about "hildon-desktop", and then confirm that you want to install the updates.
Let it install and then just reboot, and that should be it.
I thought I saw you mentioning something about some dependencies not being met when trying to install, to remedy that run the following in your x-term;
(not sure this will work but hey, atleast it's something right?)
Code:
sudo gainroot
apt-get -f install hildon-desktop
I'm not giving you any guarantees any this will work, but if the package is in the repos, it should.
And as a sidenote, I highly recommend you follow Mentalist Traceurs advice in the future, if you are unsure on some software, don't install it.
All in all, best of luck and I hope this proves to be enough to resolve the issue.