Click the first button or 'Ctrl + O' and type the IP address to connect.
You can type the Host name in the login window when you are in the local network.
Drag selected text and drop into the upper window, it will copy the text to your window. 
You can drag a URL from Internet browser to your window.
Drag a file to remote user's window, it will send the file to remote user.
You can minimize x Chat. When there is a connection coming, x Chat will pop-up automatically.
When you resize x Chat to a smaller window. Toolbar can be customized to remove buttons by double click on it.
Check your IP address in File - Properties.
For Windows 95/Windows 98 without local network, you can set your Computer Name (HOST) in Network Control Panel. 1) Double Click TCP/IP. 2) Select DNS Configuration tab. 3) Enable DNS. 4) Type the name you like in Host box. 5) Click OK and restart your computer and done.
You may define your own instant messages in Tool - Options - Message.
You can resize windows by dragging the horizontal bar up or down.
Customize the attention bell as you like in Tool - Options - Misc.
You can turn on/off the webcheck feauture in Tool - Options - Misc. While there is an URL coming, your default broswer will connect to the site automatically.
Press Ctrl G to active attentention bell.
Save the important chat record before you exit the program.
Before you open a file sent by your parnter, be sure to have virus check.
You can block serveal users to connect to your computer by adding them to the block list. (File - Properties)
When you are going to send a file to your partner, it is better to let your partner know first.
If you are going to leave the computer for a while, you can use the customized instant message to notifice your partner.