Question how to add ipsecvpn and enterprise packages back?

hello everyone .. in all of the cooked version, the ipsecvpn and enterprise packages are removed.
I actually need them to be able to connect to the wireless within the office where I work.

Everyone says they can be added back separately, but I yet to figure out how to do that.

Could anyone explain how to add those two packaged back or where to get a WM6.5 original build so I can try re-cooking Onyx or Ahen with those two packages?

Thank you very much in advance