How to transfer domain

[HabboFrenzy]

If i buy a domain from a domain registrar, Like 123-reg.co.uk, I will i transfer it onto this account?, And direct to my subdomain?

I'm sorry, if this is like really simple, but im not very expreienced in that section

Can you please walk me throughu it thank you
Edit:
anybody know please?

 

[DefecTalisman]

Purchase the domain name. Point the DNS at x10's nameservers : ns1.x10hosting.com and ns2.x10hosting.com.

Then in your cPanel configure it as a parked domain and there you go. If you are using a CMS then change the domain in the config file to the new domain.

 

[HabboFrenzy]

thank you so much
Edit:
one question, will it then be a my sites domain, or will it be reirecting to the sub domain?

 

[DefecTalisman]

example of the above methode -> http://www.defectalisman.com
&
http://www.defectalisman.com/joomla

This should also still work->http://defectalisman.exofire.net