Might help if you explained why you wanted to do this.
Each desktop entire drive can be shared on the LAN just like any folder is. Probably need to convert to dynamic disks so they can be spanned to create the single storage unit.
I want to know how to connect the HDDs of 5 desktops to form a single storage unit.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic