When Can I apply green card?

I'm H1B visa already 3 years. And I want to apply for green card.When should I begin to apply? How long will it cost?
And I have a child born here.Can I apply green card as American's parent?

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18岁以上的公民才能为父母申请绿卡 -年轻的妈妈- 给 年轻的妈妈 发送悄悄话 (274 bytes) () 05/07/2004 postreply 14:37:30

if为父母申请绿卡, 21 years old -sdfsdfsdff- 给 sdfsdfsdff 发送悄悄话 (114 bytes) () 05/07/2004 postreply 16:26:20

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