Well my friend welcome to the world of Linux. Were the hackers enjoy a better life in computering.. Were we all life in harmony and are not Fighting over Licences. But as I already said you become a hacker when you use linux. And this is the first Hackers Lesson. Google is a Hackers friend

When you Google for "ext3 Windows" I did find: "http://www.diskinternals.com/linux-reader/"
and "http://strabes.wordpress.com/2006/11/21/readwrite-support-for-ext2ext3-filesystems-for-windows/"
I hope I did help you by telling this. I also found a lot of Dutch crap since well I am a Dutch Hacker.
Have fun with Linux. and if you dont like Ubuntu. Please try another linux Distro.
Cheers,
Robin
ps.
Linux NTFS reading is great. So if Id were you id just go into linux. Mount the NTFS drive and copy the data to the right Folder

Then you can also use a better Filesystem then ext3. Like RSFS or RS4 or even JFS.