WMI is great when it works. All of our "Remote" tools rely on it heavily to work. If you are having problems deploying or querying some system, RPC Server or other WMI errors, this simple batch file will probably help. This may not fix all issues but will save you a lot of time trying. In short, if this doesn't work then you probably have some serious issues.
http://installsolutions.net/Community/files/folders/miscellaneous/entry11.aspx