newbie...ruby error..?

Salam Ruby....
Saya adalah newbie amat dalam ruby...:)
saya pakek os windows xp dan database mysql5.
saya udah coba beberapa contoh program ruby, tapi selalu saja masih error.
webricknya http://localhost:3000/   udah ok.
kalo saya jalankan program yang lain misalnya http://localhost:3000/test/coba
muncul sintax error :

no such file to load -- sqlite3
This error occurred while loading the following files:
   sqlite3
mohon pencerahannya.

Terima kasih

Zen

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