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Well, lets keep in mind that older is a relative term when we are talking about stars. Our Sun is roughly 5 billion years old, the Universe is about 14 billion. But the stars that cause Supernovas actually have much shorter life spans (at least the ones that are not caused by white dwarfs in binary star systems). Thus I suspect there well could be stars that are 7-8 billion years old that have everything that is needed to form life.
Also lets keep in mind, that life might develop towards intelligence more quickly than it did on Earth. We have had life on Earth for at least a 3.4 billion years, and complex life has existed for the last 600 million or so. I think there is probably enough time that it would be quite remarkable if we were among the very first civilizations in the galaxy... unless of course we are unique.
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Bill
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