People actually still post stuff like this?
Let me explain why this is completely retarded.
Obviously there's the main issue of your upload has to be greater than the server's download, which in the case of a dedicated server is never going to happen. (Even with a 10mbps target server, the chances of you being able to sustain 10mbps upload even from a 100mbit line, is slim at best.)
Also, when you use the "ping" command in CMD it sends an ICMP packet to the server, with the selected packet size. The MAJOR problem with this is that 99.9% of ISP carriers prioritise TCP and UDP traffic over ICMP, which means that the TCP traffic (which is used for web and the game servers) is most likely going to be unaffected.
And then you also have the other major issue that nearly all datacenters will filter large size ICMP requests, if it actually allows them at all (which most don't).
The only thing you can DoS using this method, is a 56k network.
Also, this has been posted at least 10 times.
No, it's not DDoS, DDoS stands for Distributed Denial of Service, which implies that the source of the attack is from multiple sources, this little ping shit is from a single source, so is a Denial of Service.