Remove the Active (System) flag from the partition to which you want to store data.
If that partition now contains the Master Boot Record you will need to make another partition Active (preferably on the SSD) and use the Windows 7 installation DVD to repair the MBR.
If that partition now contains the Master Boot Record you will need to make another partition Active (preferably on the SSD) and use the Windows 7 installation DVD to repair the MBR.
