What you can do is that you'll use mIRC and choose to log anything, and other people will use jIRC, but then you'll have to be there all day long. If you have access to your server's box, you can put an Eggdrop ( www.egghelp.org ) and choose to log anything.
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Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.