My setup is similar to Marburg's (except Reiser instead of ext3). However, I know there's some ext2 drivers 'out there' for Windows as I used to use them.
Explore2fs - not 'as native' though
Ext2fsd - looks more promising
I'm not sure what program I used to use, though...
nb - linux
can read NTFS (many, many disclaimers about damage etc here) if you set the right options at kernel compile-time.