Leviton HCM06-1SW (the new version of the 600 watt universal x-10 dimmers w/ scene control)

I have another question about the nuetral (white wire). On the non-dimmer switches I bought, the nuetral is required after the load. The basic switches I am replacing do not have a nuetral load. However, there is a bundle of white wires capped together inside the box. Would this be the nuetral and do I need to determine if one of those is specific to the load (or can I just add my white wire to the bundle). (basically I am very confused by the nuetral wire).

Thanks,
Scott