to Cable Forum
Can you post the specific Netgear model? Also is your broadband supplied via a Set top Box (STB) or Cable Modem.
I'd suggest you do a factory reset on the router (usally a small button on the back / bottom you have to press and hold in for a number of seconds). Then power down the router, and leave it off for a while.
On your computer, uninstall the wireless network card (I'm assuming you have installed one, or are using a wireless USB adaptor - again unistall that). Basically get back to the PC state before you first got the Netgear stuff. If need be use windows safe mode, (F8 at startup) to ensure you have cleared out the drivers. Reboot the PC.
Now you can again follow the original setup / installation steps as prescribed by Netgear. Remember to power cycle the modem / STB before plugging in the router.
Once all is up and runing, try looking at the router settings. You may get better reliability if you use a different wirless channel from the default - there may be someone or something very near you causing a litle interference.