That's fine, no problem. Let's try it the graphical way. In a terminal run:This will make you open the file browser with super user permissions. Navigate to /usr/bin/ and find skype. (It will take some time to load all the files.) Next rename skype to skype.real
Finally right click and make a new text document (Create document -> Empty File). Name this new file skype. Open it (double-click should work) and paste the following code inside:
Save the file and close the text editor. Lastly, the file must be executable. Right click it (skype) and go to properties. Go to permissions and click the checkbox that says "Execute".
That should do the trick. Close the file browser and test it out.