Best MBA universities in Islamabad? (with evening classes or weekend only classes)

[khizerk3]

Asalam o alaikum,

I would like to know :

1. Best universities for MBA here in Islamabad that offer programs in evening time or weekend only classes.

2. I have B.Sc Engg degree, do I need to do BBA first? or I am eligible for MBA directly? (please ignore my "noob" questions)