You might try other ports, generally for best results you should use a port range within 1024-5000 (I, for example, use 4000-4001). Good to have consecutive ports too.
Do you have any other firewalls? For example, if you use Windows XP, it has a built-in firewall, is that disabled? Double checked? (If you recently installed SP2 for example it will re-enable it).
You might want to check out www.mirc.co.uk/help/getproblems.html
- otherwise, it might be the sender's end that is the issue. The fact you've received files off others would suggest it is. Tell them to check out the Can't DCC Send thread at the top of this forum and see if it's their end causing the issues - it usually is in a DCC transfer.
he message window says I should set my dcc to receive
'Set your client to receive the transfer', do you mean? If so, check out the DCC Pending
sticky thread at the top of this forum, and heed the warning on file sharing.