In your craftbukkit folder. Honestly, just read the update description above the download link. You can try following my other guide on setting up a server. But if your sister is in the same house as you, you dont need hamachi. Leave the server ip place blank, and giveher your ipv4 address. (should be like 192.168.0.3 NOT ending in .1) then shé uses that to connect and you type in "localhost" to connect, or localhost:25565 If you want a host, t is quite easy to get one. Kerpluncgaming and beastnode are awesome and very low priced. Add your name to ops.txt or type /op username in the pail window. And read a few posts above for your other question 1337 is minecraft 1.8.1. But almos all those plugins will work with this version. Don't downgrade or you won't be able to play on 1.0.0 EDIT by Moderator: merged posts, please use the edit button instead of double posting.