can't see Skype in internet menu after installation although running with alt+F2

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http://ubuntuforums.org – Hi. I am running Lubuntu 13.04 from a usb stick. I haven't yet installed it in on my hard drive. I successfully installed Skype following instructions that I found here https://help.ubuntu.com/community/Lu..._install_Skype I can launch Skype using alt+F2 but I can't see it in the Internet menu. Is there a way to see it in this menu? I know almost nothing concerning pcs. Thank you. (Hardware)