Why you are bothering so much to download Skype to your system and consuming the space.. rather than that go to https://imo.im/> select skype from right hand side options>and login with your existing skype user id and passowrd and you are all set. You could make calls and chat similar to what we use to do in our pc's.
Hope this is helpful!
I've connected to Skype via IMO and cannot use video. Audio works ok. It would still be great if Skype would create an app for the Playbook. My family have iPads, and like Apples video chat better than Skype, but there is a Skype app for iPad. Go figure...