Joweez

Can someone help me out here??? i conducted the systemac security test on my system and found that under the hacker title....blah blah... it stated my ICMP ping port is open. Furthermore, it said: hackers are more likely to target my computer. I'm currently using Zone Alarm (free version) and I've read forums which I don't quite understand what they are implying, so I've decided to post one up myself. Nevertheless, can anyone tell me how I can set this port to close or through Zone Alarm??? Please be simple in your terms and directions as I am quite a comp. dummie. Thank you very muchie!~~~