Ok work with me here, your modem has a USB (depending on the modem) and RJ45 connection on it if you're on cable and you need to connect the modem to the WAN port on your router.
You have an ADSL router (WAN is RJ11 aka Phone line).
You need a cable router (WAN is RJ45 aka networking cable). You can't plug the modem into port one and the pc into port 2 as it won't route packets across the interfaces like that in the same way plugging in a switch won't work*. I'd suggest a WRT54GL as they are solid performers and have the added advantage of being able to run DDWRT. You could always use your Netgear as a switch/AP if you wanted ... ?
*Exception being if you have dual IP Gaming service but the userbase was so minute when I last looked it's hardly worth covering.