it will be real hard for you to get into grad school , let alone TA or GA ship... plus you have civil engeneering which is a challenge if you're in visa. i would suggest working for a year and going to IT shchool if you can't find a good grad school soon.. how are your finances? can anyone support you or are your on your own too? if you're on your own , finding a grad school with TA or GA is going to be extermly hard with your gpa ..