iTunes: A query.

You might be able to help me. Given that I have an uncanny ability to make hi-tech stuff not work (am on standby to be parachuted into Iran where I am, under Pres. Obama’s orders, to just stand beside Iranian reactors, thereby rendering them useless) I’m having a bit of difficulty with iTunes, so here’s my question: Is it possible to download ones’ previously purchased iTunes tracks when one no longer has access to the original computer they were downloaded onto? I’ve gone onto my iTunes account from a new laptop, and found that they are not listed at all on my account. Thoughts? Or should I just use a hammer?