12-01-2012 17:23 - edited 12-01-2012 17:26
You have to download, install, run, and signin to the actual Skype program. You can download the installer for the latest/greatest version, beta 220.127.116.11 here:
Once that's done, see this set of FAQs/Guides for more help:
If any specific questions come up, feel free to come back and post them.
Please note: I do not respond to requests for help via Private Message.