Have you installed the Devolo Powerline adapters?

Watch the video
http://www.devolo.com/consumer/dlan-mains-supply-net...
Is the Netgear n150 the Orange Netgear DGN1000 Wireless-N 150 Router with DSL Modem?
http://www.netgear.co.uk/home/products/wirelessroute...
The EE/Orange Bright Box router does not have WDS and your Netgear DGN1000 wireless-N 150 does not have WDS, so they will not connect to each other via wireless, only via (wired) Ethernet cable.

And you don�t want WDS it halves your LAN network speed.
Wireless distribution system (WDS)
http://en.wikipedia.org/wiki/Wireless_distribution_s...
Example only: How to connect router and access point with (wired) Ethernet cable
http://i.dslr.net/pics/faqs/image93081.jpg
Configure LAN static IP addresses
http://portforward.com/networking/staticip.htm
==========
How to configure your Bright Box wireless router.
Configure EE Bright Box router DHCP server range...
Lease time: Forever
Start IP: 192.168.1.21
End IP: 192.168.1.250
This will give you 25 LAN static IP addresses 1 to 20 and 251 to 255.
-------------------
Configure Netgear DGN1000 router as the access point on first floor.
Ethernet cable from Bright Box router must be connected to one of the 4 LAN ports.
Important, disable Netgear DGN1000 DHCP server.
---------------
Configure PC connected with Ethernet to Netgear DGN1000 access point
Select Use the following IP address.
IP address: 192.168.1.? your PC Ethernet card IP address.
Subnet mask: 255.255.255.0
Default gatway: 192.168.1.1 Bright box router IP address
Select Use the following DNS server addresses
Preferred DNS server: 193. 36. 79.101
Alternate DNS server: 193.36.79.100
And that�s it now, it should all connect with wired Ethernet cable.
Edited by deleted (Fri 29-Mar-13 15:23:15)