It's not that difficult but it helps if you have another computer connected to the internet while you work. If you don't then you will need to find out the IP address of the server you are going to download from -- if you are connected via windows a PING command will return you the address
(use the same parameters as the dig command referred to in the instruction guide below.
Now follow these instructions and you should be OK
Here's the link -- for once something is clear