[link|http://p-nand-q.com/e/reiserfs.html|Reiser4Win is now --> RFSTOOL]
[link|http://www.it.fht-esslingen.de/~zimmerma/software/ltools.htm|LTOOLS for Windows RW access for Ext2]
Some older docs at [link|http://penguin.cz/~mhi/fs/|File-Systems HOWto]
I like this [link|http://www.penguin.cz/~mhi/mbtmgr/|MATTsoft Boot Manager], haven't used it yet... but working on it.