want 2 know abt gmat and scholarships

hi... im Rubaina from india.. im 18 and thinking of doing gmat.... i am doing bba ( bachelors of business admin. ) which is a 3 year course.. and i hav read dat v should have 4 years of gratuation.. so i think i hav to do one more course for one year... ??? what do i have to do , give d gmat test de...