1st of all i must say this site is really good. well i've a question concerning lmhost.sam file. I came to know that IN WIN98 environment,if some one has my ip and i've shared ports enabled than he can hack in to my system when you've no firewall configured. Well due to some reason i can't install any firewall but can i protect my self by upgrading to win2000 pro. Also one more question that Do uploading others ip in lmhost.sam file also work when ports (other than netbios ports) are opened like port 80,23 or some commen ports. Hope for some good response.