Hosts seems down after Scanning

[Eric Teo <eric-teo () tm net my>]

Hi !

I am using XP home SP 2. I installed nmap nmap 3.70 with winPcap 3.1 beta3 but everytime I used it to scan I always 
getting "  Note: Host seems down. If it is really up, but blocking our ping probes, try -P0 ". I have tried disabled 
window firewall but it still failed. I also had tried troubleshooting recommendation from insecure.org but I just can't 
get nmap to work. Any suggestions and kindly advise ? Thanks!  

from,

Eric