FTP'ing Second website

[#1]

I've just registered a new (second) domain name with Plusnet and now want to upload to it.  I subscribe to Filezilla to ftp my original site but I'm not sure what to do or what I need to use it to ftp the second site. Do I need to do anything with the Host name, user name and password? Can anyone help please?

[#2]

Are you using your www (homepages) webspace or ccgi?
If homepages just create a directory within your existing webspace with filezilla and set-up the domain to point to that directory via the doman names optin on the member centre page.
Then just upload your new website to the directory using filezilla and within 24 hours you should see ir using www.yournewdomain.ext
P.S. you could have saved a lot of money by registering the domain elsewhere and just hosting on your account. Most 'registration' companies charge around £6 -> £7 for 2 year registration of a .co.uk domain.

[#3]

Thanks for that. Sorry to sound thick but how do I get to "....via the doman names optin ..."?