[Spacewalk-list] Force install?

[m.roth2006 at rcn.com]

I'm sure this has been covered before, but can't seem to find it. I created a new CentOS 5.3 repository Friday. Today, I unsubscribed my test system to 5.2, and subscribed it to 5.3 and its child channels. I tried to upgrade. First it failed, asserting that it couldn't find the repomod.xml for the new channel. So I renamed /etc/yum.repos.d/Centos-Base.repo. Failed again. Finally, I restarted osad on the client, and everything on the server. What I got was that it had failed, because of rpm conflicts. 

Does someone have a link to how I can tell Spacewalk to do a force install?

   mark "and here I thought everything was hunky-dory...."