Andy, there is a perfectly good way to do this. I have been using this method since TTD.

First create a new folder with the name of the graphix you want in the library, then copy the entire folder to the Integration Designer/Bitmap Libraries directory, then your folder name should show up in the list like this:
------------------------------

------------------------------

After that, you can find all the buttons in that window like this:
------------------------------

------------------------------

I hope that helps Andy, let me know if I should explain more.

Joey