Hey Friend
I can send you all the details regarding admission procedure in CS you just post your mail id here or else visit the official website of ICSI i.e. icsi.edu. you need not to prepare for foundation course as you have completed your graduation you can directly enrol in inter stage of CS course. And now regarding scope of CS m a trainee of cs course i will complete my cs soon then i will enter into real world as it seems to me the scope of cs course is no where less but would like to suggest you to take CA along with CS or CS cum LL.B as both are good options with CS.