Mouse hover display text

First, understand that I am very new with MySQL and Php. However, I have accomplished the very basics - created a DB, Then a table. I used PhP mysql generator and from the table have built two forms for my website - one form is view only for users and the other is a CRUD form for Admins.
The table contains data about our virtual airline routes. All airports are listed with ICAO codes only. Here is what I would like to see: when a user places his mouse cursor on an airport ICAO, i would like to see a text popup with the airport name.
Questions I have as follows:

  1. is this possible?
  2. What additional info do you need from me to tell me how to do it?

I have WAMP/Apache/PhpMyAdmin as localhost for development

The actual DB is on a MySQL web hosting facility and interactive forms on my personal website.

There are many ways to do it. CSSPLAY has some great ideas http://www.cssplay.co.uk/menu/
This one might work. http://www.cssplay.co.uk/menu/balloons.html Or http://www.cssplay.co.uk/menu/cssplay-tooltips.html