Do it yourself
If someone in your organization already has the <a href="http://www.open-organizations.org/view/Socialtools/ServerConfigNecessarySkills">necessary skills, and is willing to be your system administrator, they can set up a groupware server for your organization by following <a href="http://www.open-organizations.org/view/Socialtools/ServerConfigStandard">the standard recipe. They can get help with this by joining the socialtools-help mailing list.
If you don't have anyone with the necessary skills, someone in your organization may be able to apprentice with a system administrator in another organization in the SocialTools network. See the list of members to find out if there is one near you.