Diane,
WTG! Congratulations on a great win!
When I won and received my $1000 Visa GC from a shoe retailer, the letter pretty much stated the same thing, that they looked forward to my purchases of shoes from their website, blah-blah-blah....Well as much as I needed new shoes, by the time this card came I needed other things a whole lot more (Food, Medicine, Home, etc.) so that is what I spent it on, and although it bothered me that I never did spend any of it on their shoes, I did write them and tell them how much I appreciated winning it. :)
Don't know if that helps, but usually.....and I say usually, they can not tell what you purchase with those GC. So I would go to Best Buy and purchase what you need, not what they say in letter, if there are any restrictions placed on the card, you will find out when you try to use it. :)
Cindy