Does anyone know where I can find full moon wo sagashite in English?

The only consistent way to obtain Anime is via bittorrent.
http://thepiratebay.org/torrent/4671177/Full_Moon_wo_Sagashite
This version has Japanese audio and English subtitles. If you have the option, always go for that.

Before you download the torrent file you need a bittorrent client, like µtorrent or bitlord. If you are connected to the internet via a router you will have to forward the port(s) the client uses for connection. Consult your router’s manual for that. Also make sure that your firewall permits the client to connect to the net.

http://www.animea.net/download/434/Full+Moon+wo+Sagashite.html
these are all direct downloads. you click on each episode and you’ll go to another page and it will have options for where you want to download from stick to “rapidshare.com” and “megaupload.com” and “hotfile.com” and “mediafire.com” they are fairly reliable sites to download from. no extra software. i don’t know if you want dubbed or subbed, but this site is all subbed unless it says otherwise. (i watch a ton of anime, i highly recommend fansubs over dubbs so much better, and much closer to the actual translation)

http://www.animecrazy.net/full-moon-wo-sagashite-anime/

for sreaming anime: Veoh.com and animecrazy.net are my go-to sources.
For downloading: torrents, obviously!

i used trishacupcake on youtube, but them i went to veoh and in the search box i put in Full Moon episode 5 english dub

from episode 1–26 i think its in eng dub where you can find just searching on google, but after the rest you can find in eng sub on google.