Probably be better to go with a hosting company - the ntl webspace is really rather basic.
Here are a few;
http://www.estratospherehosting.com
http://www.hostingunlimited.com
What kinda thing are you trying to do? - Maybe If you are on broadband it might be easier to run an apache server on your PC, Especially if its low volume use and your passwording it (ntl will have nothing to whing about!!!) - You would probably be best to register a Dynamic DNS or No-IP service, as well to make life easier.