Can a third SATA hard drive be added to a Dimension 9200?

Can a third SATA hard drive be added to a Dimension 9200?

 

My Dimension 9200 has 2x160Gb SATA drives.  There are 6 SATA connectors on the motherboard, a group of 2 (0 & 1) used for the hard drives and a separate group of 4 (2, 3, 4 & 5) of which #2 is used for DVDRW.  Can the remaining spare SATA connectors be used to install one or more additional SATA hard drives?  Are the two groups different in some way?  I realise I would have to physically mount the additional hard drives in one of the spare upper 5.25" or 3.5" bays.

 

Thanks...