HI prets,
I have been thru the same prob.Speak to the person who is going to be there on the day of ur exam.Tell her u an international student and u dont have a 2nd id.She will ask u to get ur home country driving license.But I applied for state id at the DPS office and waited till I received it and then gave my exam.Credit cards wont help cos they dont have a photo.
bye
drsj