Philips VOIP8411B/37 Skype wireless phone how does it work?

hi
so i’m thinking of getting a Philips VOIP8411B/37 Skype wireless buzz. i want to use it in internet cafes or hot spots. i see that it comes packaged with some type of base.
the question is do i have to plug anything into a computer like a USB dongle to get this to work or can i unadorned just walk into a wifi spot and make international buzz calls for free to a skype user? i really want one if it works. if it’s clear and simple to use and i can just walk into a wifi spot and take a call then i want it. if the equipment is not there…i don’t want to buy it. also can anyone clarify what this new equipment called “DECT” equipment does?
here is what i’m looking at:

http://cgi.ebay.com/Philips-VOIP8411B-37-Skype-Certified-VOIP-DECT-Phone_W0QQitemZ310008106544QQihZ021QQcategoryZ121146QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

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