CIA or CISA

[educate_till_u_drop]

Dear friends i have been working for a big four firm in pakistan.
But due to some reasons i had to leave the firm.
My experience is in ERP Oracle Financial.
But as i am not currently working in the said firm and in the same role, someone told me to make your qualification.
such as CIA or CISA.
Could any one help me on suggesting about doing the said qualifications.

Also guide me about the scope of both in Pakistan and Globally.

And which should i do first.

Rgards.
educate_till_u_drop