If you have Linux and Windows installed i.e you dual-boot on your pc you might have experienced that it is no problem to read Windows files and access Windows partitions in Linux, but that it is indeed a problem to access Linux files, hard drives and partitions in Windows. Below are a few tools to help you access Linux files in Windows. These applications are completely free.
For Read Only Access
Emulates the look and feel of the Windows XP Explorer and allows read-only access to ext2 and ext3-formatted drives. Linux Reader can also search through Linux images and mount images for browsing.
Download Linux Reader here: http://www.diskinternals.com/linux-reader/
It is a GUI explorer tool for accessing ext2 and ext3 filesystems. It runs under all versions of Windows and can read almost any ext2 and ext3 filesystem.
Download Explore2fs here: http://www.chrysocome.net/explore2fs
ReiserDriver is an Installable File System Driver (IFSD), used to easily (and natively!) read ReiserFS disk partitions under Microsoft Windows (2K/XP) by allowing ReiserFS partitions to appear as additional disks to the Windows operating system.
Download ReiserDriver here: http://sourceforge.net/projects/rfsd/
For Read and Write Access
If you intend not only to read the Linux partition but also to write on it, EXT2 IFS is the perfect choice.
Download EXT2 IFS here: http://www.fs-driver.org/