I have part of, javascript of a messenger that i found on line and i dont know how to make it pop up on my site and where to put it in the code of the page. If any one know how to help me please notify me w/ the answer.

for popups, see this page:
http://www.lissaexplains.com/java4.shtml

for the rest of your question:
could you be a little more specific? did you get this code somewhere? (if so, where?) what is the code? where to put it in the code really depends on the script :)