Using focuswriter is a really good idea if you are having trouble focusing.
http://portableapps.com/apps/office/...riter_portable
Killing the internet doesn't work for me though. (Even AFTER I've done my initial research) I have to research as I write, so at least during the two initial drafts, I can't work without the help of internet. To each his own I guess.
Of course I get distracted too by the internet, but that's more to do with my lack of self-discipline than anything else.