Thanks for the tip! I installed BootCamp 3.0 alongside with Macdrive. Great thing is that now I don't have to use Ext2fsd to map the HFS+ partitions anymore.
No MacDrive needed anymore!!
Apple has made HFS+ drivers for Windows.
Read more here: Easy solution for HFS+ and Windows
One caveat though, Windows 7 won't display any east asian fonts correctly in file names for files on HFS+ partitions. Is there a solution to this?