plz help

[cool_abhi]

hi guyz dis z abhinav narang m final yr BE(comp sci) student of MIT manipal.i wanna do MBA thru GMAT aftr 2-3 yrs of experience.so i wanna knw wht z d best time 2 give GMAT lik if i ll give GMAT now without exp(as d score z valid for 5 yrs) n ll apply 2 colleges aftr 2-3 yrs of exp the score ll have equal weightage or are thr any colleges which accept only latest scores.
1 mor thing if i ll give GMAT more than once then what is d criteria i mean score which z recent z considered or d best one.
plz mail me if any1 z having idea about abov written things.my id z abhinavnarang19@gmail.com
thnx