Within your My Documents/The Lord of the Rings Online/Plugins folder, you should find folders with the Author's names, and within those folders should be one or more <plugin name>.plugin files. So for instance, using Palantir as an example, your folders should look like this
Code:
[ ]My Documents
[ ]The Lord of the Rings Online
[ ]Plugins
[ ]DigitalUtopia
[ ]DUInterface
[ ]Palantir
[ ]Utilsx
Palantir.plugin
Then to load palantir, you would load up the game, enter Middle-earth, and type the following into the chat window:
Code:
/plugins load palantir
It should load at this point. If it doesn't, please copy/paste any errors you see.