In the team I work in, alot of scripting is done. Today, we had a problem whereby a script was not successfully adding the X400 addresses to user accounts. The "drop dead time" came and when for these modifications, and we were going to have to do them manually. Luckily, we top a minute to look at ADModify.net and saw that it can modify any AD attribute, even multivalued ones. The X400 address addtions happened immediately, and a huge headache was avoided.
ADModify.net can be found here:
http://workspaces.gotdotnet.com/ADModify
And just so it gets indexed: Mass modifications of proxyAddresses multivalue attribute
