I have two routers Netgear DG834Gv3 and Thomson

I am sorry but I am not so familiar with the Thomson Device but I can give you a clue on how to set it up....you can skip the security settings first just make sure they work then you can set it later...Check it out!

- Thomson as "Master Router" connected to modem set up as follows
-- 192.168.1.1
-- Set up wireless access point as you normally would in Wireless Settings, muine are "MY_SSID",Channel 2,b+g mode,
64-bit WEP with hex key (rather than pass phrase)
--- Enter any laptop wifi MAC addresses in the "Client Access List" here to allow them and make sure it's set to restrict
them
-- Set DHCP range to 192.168.1.10 to 192.168.1.127 (my preference) in "Lan Settings"
-- go to Wireless Bridging and Repeating menu option
--- Set "Enable Wireless Repeating Function"
--- Set as "Wireless Base Station"
--- DO NOT check the "Disable Wireless Client Association" if you want to be able to use laptop wifi
--- Enter the mac address of your "Slave Router" here
Make sure all of the above is applied and has stuck, i had a habit of setting some things then clicking to a sub-menu
before clicking apply, always scroll down and click apply before drilling into sub options!

DG834G V3 : "Slave Router"
-- Get latest firmware as earlier v3 firmware doesnt support WDS
-- 192.168.1.2
-- Enable Wireless Settings and set to exact same as "Master Router" including 64 bit WEP key and MAC access list for
laptops etc
-- Disable DHCP in Basic Setup (I think)
-- "Advanced Wireless Settings" menu option
--- "Enable Bridging and Repeating"
--- Select the "Wireless Bridge With Client Association" (or similar) option
--- Enter the "Master Router" MAC address here
Again, double check everything has stuck, that the "normal" wireless settings for both routers are identical and reboot
both (in either order worked for me but booting the Master first is probably best practise)
GOOD LUCK!!!
I

Well, I can help you with that. First of all I need to know if your Thomson router supports repeating. If it does then we can go ahead and configure repeating feature on the NETGEAR router.

Reply me back so that we can proceed to the next step.

sorry, can't be done. the key word here is "router".