Re: Wireless network dropping
Not sure if it's causing the problems, but on the downstairs PC (PC1) you want the IP of the wireless card set manually to the same range as the manual IP upstairs (eg if PC2 is 192.168.1.102, PC1 should be 192.168.1.101) - because there is no dhcp on the ad-hoc wireless network. Also the DNS setting on PC2 should probably be the NTL DNS server - use 'ipconfig /all' in command prompt on PC1 to find this.
I've never found ad-hoc wireless networks very reliable myself - IMO a £50 wireless router would be better, as you wouldn't need PC1 on to use PC2.
HTH
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