How to move a VM across datastores on ESXi 4.1.0

All,

    I need to move a VM from one datastore to another on the same host.  I have two drive arrays where each drive array is its on datastore.  However, one of them is having problems so I want to move two of the VM's off of one datastore to the other.

    Is this possible through vsphere and if so how?

My Host is a:

Dell PowerEdge 2950

vSphere Client Version 4.1.0

VMware ESXi 4.1.0