L1A to H1B conversion

[ntr24]

hi,
i have few questions.
if i transfer from L1A to H1B what are the problems involved in general?
once i get a transfer I have to start working from October 2005 only?
But there is no stamping..how some one knows that i am on H1?
i understand if i leave the country i have to get it stamped while travelling back to usa...

If i have dependant on L2 what will happen to her status?

once i get the transfer to H1 and start working on H1 to another employer..can i apply for Labour and GC ..?(i do not have a stamping in my passport...i will get it only if i move out of the country)...

Is there any process where i can apply for Labour on L1A without my L1A employer knowing about that???


can some one please answer my questions...

thanks

[immihelp]

You can start working on H1 only from Oct 2005.

You file for your wife's H4 when you file your H1. (Form I-539)

You can apply for labor and GC with new employer.

There is no way to apply for GC without employer knowing about it, because employer has to do it.