Can't read my Windows (Boot Camp) partition from OS X
NTFS support was removed in Lion, follow below to re-add it (you should be able to write to the drive as well, after installation)

install and enable ntfs-3g:
http://www.macupdate.com/app/mac/24481/ntfs-3g/

and install fuse_wait:
https://github.com/bfleischer/fuse_wait