is subjest test necessary for getting into u of i or gatech?

<p>im an indian resident . going to give my sat in october. planning to get admission for 2013 summer. i really hope to get into Gatech or Uof I .
now the confusing part is whether i should give the subject test or no !
and if yes , then when should i give it ?
I NEED TO GET INTO COMPUTERS FIELD .
also , does a subject test help in securing financial aid ?</p>