sorry: Intel(R) ICH9M-E/M SATA AHCI Controller.
no I did not load anything additional.
I really have no idea, which issue may have caused your troubles. Maybe it's the Virtual Box software itelf.
Usually you should be able to get Windows 7 installed without any problems.
When you are going to install Windows XP, you have to integrate an actual Intel AHCI driver (for your purpose I recommend to take a driver of the "Matrix Storage Manager" series). You will find my English language guide about the integration procedure within the start post of
>this< thread.
Regards
Fernando