I would like to help, but i dont use AmiTCP.. I only use Miami and MiamiDX.. You can get from Aminet.
Definitely are something wrong with the TCP/IP config, becouse thats error showing in Ibrowse its not normal...
Anyway, i am sure anybody here will help you to config the AmiTCP.
The thing is you are close to put you Amiga on line!
Regards