Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This one's a dog!

Don't even think about trying to upgrade an older computer to windows vista! It's slow enough on modern hardware, but on anything older than last years hardware, it's a dog. It's just too slow to do any real work on. Frustration will ensue, and you'll end up reloading XP, Trust me! Don't waste your time or money!