This is accomplished via what is known as a 'nameserver update' or 'changing the nameservers'.
NOTE: This is not the same procedure as 'transferring' a domain, which would require an IPS tag. You only need to 'update' the nameservers for your domain to make use of your 5quidhost account.
In our setup e-mail you will find two nameserver values. You need to log into the interface provided by your domain registrar and find the 'nameserver update' or 'change nameservers' option.
Having done so, it should just be a case of copying and pasting our nameserver values into thr appropriate boxes on the page provided by your domain registrar.
NOTE: Some registrars require both the nameserver names and their IP addresses, others require only the names.
After a propagation delay of 24-48 hours, your domain will resolve to your hosting account with us.