WMI fails when connecting to remote pc   

I keep getting this error when I try to connect to a remote PC: "This program 
requires WMI. Ask your administrator to consult the WMI documentation and 
install the WMI components". 

I am the admin for the network, so security shouldn't be an issue? What do I 
need to install?

I'm running Windows XP on all remote PC's.

date: Thu, 10 Apr 2008 12:31:01 -0700   author:   vbtrying