I am having trouble installing an add in. It is a text manipulator from Russia that allows an alternate keyboard with grammatical markings. It works fine on my laptop, but on my desktop I can't get it working. It shows up as a Disabled Application Add-in and when I try to enable it I get an error that says: "This add in is installed for all users on this computer and can only be connected or disconnected by administrator." I have tried all sorts of security and Trust Center settings. Any ideas?

I am using Word 2007 on a Vista machine. Thanks!

Alexis