From the M50 (and airport) ...
 
Take the Blanchardstown exit (N3).
Head west on the N3 (ie turn left if Northbound, right if Southbound)
Pass through the first roundabout and take the next exit (Blanchardstown Shopping Centre)
Turn left at the second roundabout.
Turn first right (at the Renault garage and heading towards Power City).
Turn right into Coolport carpark (Look out for "Blackbird Data Systems") and park in a visitor parking space.
 
From Dublin City
 
1) Take the N3 westbound, cross the M50 and follow the directions above.
 
2) Heading westbound along the main road of the Phoenix Park, continue straight through Castleknock and Blanchardstown villages.
Turn left towards the Blanchardstown Shopping Centre (having passed the Garda Station and Shell garage on your right).
Turn left at the second roundabout.
Turn first right (at the Renault garage and heading towards Power City).
Turn right into Coolport carpark (Look out for "Blackbird Data Systems") and park in a visitor parking space.