Fòram na Gàidhlig

What is skype mobile to skype mobile reception like? Is it clear reception like being on a normal phone and is their a time delay especially if the other person is overseas? What are your experiences with skype to skype calls?
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How doe I use skype on a windows vists home edition when I am using a proxy server? Someone told me that if I have windows vists home edition and use a proxy server, I cannot use skype? Is this true? If not, then how do I use skype?