I am glad you got your issue sorted smile - However, recommending that to every other browser of this thread is not needed.

Oh, and the DCC exploit affecting 6.03 cannot be blocked by firewalls or any other security devices, it is purely an internal problem with mIRC. The code to exploit people is easily obtainable by anyone on IRC who knows more than half a dozen people and so you're at risk unless you have DCCs on ignore. Otherwise, you may face having your mIRC crashed on a regular basis.