When I try to download iTunes 8.0.2 it pops and says that I need to check my

internet connection? What do I do?? I bought the new iPod classic so i have to update my itunes. thanks for any help you can give me.
The people where we get our internet are coming to check our connection but they have already done this before and everything was fine. Is it something to do with Apple rather than my internet?
 
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