I quite like the fireftp extension for Firefox, it is very useful for quick access to my webspace, from within the browser.
It lacks features, compared to the likes of Filezilla, though.
I'm a bit puzzled by the concept of deleting files from NTL webspace, that still occupy space on the server - is this a kind of 'trashcan' facility from Contribute3?
Overall, the consensus seems to be, that an FTP program is best for direct manipulation of your webspace, it just remains for you to choose which one - then you can really empty the trash
