Where's that shotgun
The OP has said that he cannot get the HDD to install the NMT Apps by simply placing it in the A210.
This can be because some HDD's are OEM and come uninitialised. By formatting to NTFS on a PC then the HDD will be recognised when placed in the A110. Then he will be able to do the NMT Apps install and thereby partitioning the HDD into 3 and formatting each partition to Ext. The swop partition Ext2 the others Ext3.
If you so wish you can make the storage partition NTFS. To do this see the Guide on the NMT WIKI.
You can simply format the partition to NTFS however that may make some of the userapps via the Community Software Installer not work. That's why the Guide was written as it enables the CSI Apps.
In a nutshell the NMT and the NMT Apps installation is extremely flexible and can be setup to suit just about everyone's preferred method.