[would] is will past type. in the past time will want what to do.
[would+be]in the past time will want to become what.
[would+be]= want to become
March 12, 2008
supose some thing your asking with someone with requesting you use would
and would be use when some one having ability to do somethig you are showing tto him you would be able to do something like that i think you understand