ICQ2Go!

You can now use ICQ2Go! from any computer, even where ICQ cannot be installed !!! (hehehehe)
This is a web based instant messaging communication system.
The latest version is flash based, but you can download the older java version too. You can also use Link ICQ2Go! from your site & chat with visitors using the ICQ2Go! Panel.
It will also let your visitors know when you're online, add you to their Contact List.
For more information, visit the ICQ2Go forum.The Windows requirements are Flash player 7, Javascript enabled browser and Firefox, Internet Explorer 5.5 or higher, Netscape 7 or higher, Mozilla 1.0 or higher.