Trendware TEW-630APB (TEW630APB) "modem range extender setup" Questions

...range extender to boost the wireless signal from my virginmedia hub around the whole house. When set-up, the product seems to function very well - it provides decent connection to all parts of the ...

...range for a THOMSON ST 585 router&modem. I was not satisfied because the range was same, and I modified many settings...till the WLAN light is OFF even if everything is pluged in. From the right to ...