You can just totally remove we messenger link (IM_MainForm). There is a function Chat_OpenContact which allows you send users directly to the im_chatform.aspx page.
For examples:
<script src="CuteSoft_Client/CuteChat/IntegrationUtility.js.aspx"></script>
Users
<a href="#" onclick="Chat_OpenContact('IE')"><img src="CuteSoft_Client/CuteChat/Images/avatar.gif">UniqueName=IE</a>
<br>
<br>
<a href="#" onclick="Chat_OpenContact('Netscape')"><img src="CuteSoft_Client/CuteChat/Images/avatar.gif">UniqueName=Netscape</a>
That mean you maintain your own contact list. When the user is online, you allow them start a consersation.
Hope it helps.
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
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