XP PRO Network Problem

I'm trying to connect a Windows XP PRO laptop (wireless) into a customers network.

There are currently 3 Windows XP Home machines all talking together quite happily and connecting to the internet. Oddly each machine has an IP address assigned (e.g 192.168.0.2) rather than obtaining an IP automatically ,which I can't really see a problem with.

Each PC including the laptop has Norton Internet security 2006 installed.

There is no domain and they all are using WORKGROUP.

I have tried adding all the IP addresses as allowed through NIS 2006.

The laptop logs in as Administrator and connects wirelessly to a netgear router. All the other PC's are wired.

If I assign an IP address to the laptop I am unable to connect to the internet. Doing this I still can't connect to the other PC's

I have gone through the network setup wizard on the laptop etc.

I can ping the other machines on the network with out problem.

Any help would be appreciated.

If it helps anybody else I sorted this out this morning.

I logged into XP PRO as something other than Administrator and everything worked straight away.

Dont know whether the Administrator account was damaged or what.