If the locks are original you can order a new key from the dealer if you give him the VIN number and show him the registration to prove ownership. I also had a laser cut key made locally (which won't help you much) which I found by looking in the yellow pages under safes and locks. The local hardware store won't be able to do it but a good locksmith should. In my case the dealer key was the same cost as the copy, about $30. By the way, they don't actually use a laser.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold