Hey there,
i am currently working on Musical-instrumentals. For that I require Full (Conductors) Scores. The only one I have is of Les Miserables. If anyone out there owns a full score and is willing to send it to me or trade it with my Les Mis, please notify me. I have been looking for Scores for months and this forum is sort of my last hope.
Hopefully yours
Jo

Try www.4shared.com. Found lots of stuff there. Just type in the score you're looking for.

Here is a site with many songbooks and sheet music of musicals and broadway:
http://www.broadwayscoresandsheetmusic.blogspot.com/

On "The Pianist's Library" (http://s1.zetaboards.com/ThePianistsLibrary/index/) there is also a list of musicals scores and where to download them. Go to the forum "Piano Music Link Collection" (you have to register to see that!) and scroll down. There you will find the topic "Musical & Broadway" and the list in it. Didn't check the links, so you have to try on your own. Hope this helps.

I personally like: http://hamienet.com/
They offer full scores on a lot of songs.
Though I did not check for the one you wanted it may be worth checking out.