How to apply for my Chinese parents to visit me in the US?

Sorry that I can't type Chinese on this computer.
I am a US citizen and I'd like to invite both of my parents to visit me here.
I really appreciate if you'd share your experience or knowledge in this regards, such as what kind of papers required and the time it takes.

Thank you very much!

所有跟帖： 

• passport and visa -motheroffour- ♀ (37 bytes) () 04/30/2009 postreply 11:26:25

• get a form I-134. the instruction lists the documents needed. -胡梦绿- ♀ (0 bytes) () 05/01/2009 postreply 12:11:00

• 回复：get a form I-134. the instruction lists the documents needed. -elmolover- ♀ (29 bytes) () 05/01/2009 postreply 21:06:34