Pjiang, can I apply for H4B

Pjiang,
As I mentioned, I am using EAD card and my I-140 has been denied. My company is applying for H1-B for me but I can not use it until Oct. 1st. Can I apply for H-4? My friend has told me that if I apply for H4, my H-1 will become invalid.
If I can apply for H4, can I go to Canada to get the H4 visa or I need to go back to China?
Thanks

所有跟帖： 

• 回複：Pjiang, can I apply for H4B -pjiang- ♀ (473 bytes) () 05/19/2008 postreply 07:47:29

• thanks Pjiang, can I apply for H4B, another question -lucky123456- ♀ (392 bytes) () 05/19/2008 postreply 19:17:16