Thank you both for your prompt response:
To James007 - no, we do not plan to have any User mode records. I clicked Add Client, Communications Update Package Deployment (as these are upgrades from sep11 to sep12 and we have a new server), select a group and computer mode, and remote push, to an imported text file list of ip addresses. Some show up as computers, some as users. Unsure why. Would like to understand & prevent it. Have about 400 to do it little batches, and don't really need more manual cleanup.
To ,Brian: Doh! I was looking all over properties and commands, looked right past Switch mode on the right-click menu. That will fix them, thank you. Now if only I knew how to prevent it happening.