Javascript islands aren't in threads7; they where in classic, a seperate forum solution which is EOL.
The islands themselves can be inserted into other pages by selecting the "External Use" link next to the item in the control panel; it will give you the code you need to insert into a php page.
I have a small "how to" on grabbing all the items you need at ubbdev in the templates section which lives in the addons section.
