THE most important thing is to make sure the installer checks the power levels before he leaves and fixes it if they are up the spout.
Chances are it'll be some contract installer who's only trained to drill holes and connect cables (that's what I got anyway). Maybe call NTL and tell them to send an expert
In fact, before he leaves make sure you can connect to the net okay and go to the modem's diagnostics page (
http://192.168.100.1, user:root, password:root, for the NTL modems) and check the downstream/upstream levels and make sure they're within tolerance as described here...
http://homepage.ntlworld.com/robin.d...ps/signal.html
If you don't get it right first time then you'll end up with the hell many of us have for years to come.
Chances are though he'll just want to drill the hole, fix the cable and clear off as quick as possible.
P.S. The installer/engineers won't touch your PC, it's all up to you in that department, and I doubt they'll give you advise on networking (especially the contract hole drillers as they probably know nothing about computers anyway

)