[ubuntu] Ubuntu confused by ntfs partition

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http://ubuntuforums.org – I am using wubi to use karmic koala. I have a 500 Gb single HDD partitioned as C:\ = 100 GB Windows 7 D:\ = 300 GB Softwares, files, data E:\ = 50 GB empty and i want to install ubuntu 9.10 here F:\ = 15 GB Recovery partion created by dell when shipped. Look at the pics below. Ubuntu doesn't recognize D:\ and E:\ separately but as a single partition and unknown. Pls Help. (Hardware)