If you’ve purchased a VPS from 20i, you can point an existing domain to it. You need to replace the A record of the domain name to the IP address of the VPS. At 20i you’ll have two A records that should look similar to these: domain.com -> A Record -> IP Address, *.domain.com -> A record -> IP Address. All you need to do is replace the default IP address with the VPS IP address: domain.com -> A Record -> VPS IP Address, *.domain.com -> A record -> VPS IP Address. Allowing about an hour for propagation, the domain should then point to the VPS.