Laptop can't see Netgear wireless router in same room
I am getting excellent wireless connectivity between (XP Home) laptop and Netgear Router/modem (connected by ethernet cable to my (XP Pro) PC) between 2 floors, but have another laptop (XP Home) in same room as router, which doesn't see router/network, etc. This laptop has an Intel Pro wireless 2200BG adaptor, which I have updated. This wireless connection has worked on a rare occasion, but mostly doesn't. Any ideas? What settings should I be checking. I have all 3 named as WKSTN workgroup. I have changed the channel on router thinking it was on a busy frequency. Nothing changed at all!