At this point, it really doesn't matter how far anything is - with the tech available to us in the here and now, anything more than a few years' journey (at conventional speeds even, not in lightyears) is just too far.

Whatever breakthrough it is that'll let us get half a lightyear away will get us to 2,000 lightyears away. But until then, nada.

Think of all this as an over-eager child researching what his parents (errr, Santa, I mean) will get him for next Christmas 11 months from now - planning and fantasizing about every last detail, even though there's just no rushing it.