Transferring from another hosting company. Why am I having trouble?

[teacherphil]

I have had my site (www.barlbyscience.co.uk) hosted on itriss.com for about a year but due to their recent adverts policy I am now trying to change.
I signed up, logged in and used filezilla to upload all the files to x10hosting.com
Then I went to 123-reg.co.uk where I registered barlbyscience.co.uk and changed the nameservers to the x10hosting ones.
Now it cannot find the site when I type in barlbyscience.co.uk
if I type in teacherphil.x10hosting.com it works fine.
Do I have to go to 123-reg.co.uk and do some web forwarding to my x10 address?
I have read the help sections for a few hours now but can't figure it out. Any help would be appreciated
Thanks in advance.
Phil

 

[Anna]

changes to dns, such as changing name servers, can take up to 48 hours to complete over the Internet.

You also need to put the domain as parked on your account in cPanel. You can set it as main through account management panel as well, but I recommend using parked as you at all times have the fall back on your x10hosting.com domain.

 

[teacherphil]

I have just tried to park it.
I typed barlbyscience.co.uk into the "create new parked domain" box
It says "Error from park wrapper: barlbyscience.co.uk is already configured." although it is displaying "no parked domains are present" underneath.
???