1) Assuming you will reach tadamon roundabout from muntaza signal, keep going straight. if you are coming from mall roundabout or lulu, take a left at the tadamon roundabout.

2)You will reach one more roundabout. go further straight.

3) You will reach the medical commission signal (e ring road), take right.

4)you will get a signal at about 200 mts. take left.

5)keep going straight... this is an under construction road...

6)At the end of the road you will see 2 similar buildings. the first one is the police station and the next one is immigration centre. You will also see a sign board as you come near the buildings.

hope that helps.