If you have ICQ you can Chat Me, ICQ-Me and/or Add Me to your contact list. 
 

If you do not have ICQ  you can press the Page Me button to send me an ICQ message through my Personal Communication Center,the Zoom Me button to view my ICQ Whitepages details and the EmailNotify Me button to send me an e-mail and notify me by ICQ.If I am online, the message will popup on my screen, if I am offline it will be stored and forwarded to me as soon asI connect to the internet.Installing the ICQ client will enable you to know if your peers are online and communicate directly with them.