I need help. I already sent I-129F on July 9th,2007. Is there anyway to change my fiancee interview embassy? Here is the story, I filed I-129F when she was in singapore studying, now she may have to go back before case apporved. Is there any I can change the embassy? I need your advise. Thanks in advance.

A few things,

Wait for NOA2, then contact NVC about it.
http://travel.state.gov/visa/immigrants/info/info_3177.html

If NVC has sent it o to the consulate, then contact DOS and ask about transferring the case to the other country.
http://travel.state.gov/visa/about/how/how_1463.html
202.663.1225 Then press 1, then press 5, then press 0

Thanks for fast reply