Not that hard. It requires almost the same effort as registering new
domain. However, please make sure that

1) Your domain is not locked.
- You can check for this at http://www.internic.net/whois.html
make sure that the STATUS is ACTIVE (not locked)

2) Your administrative and registrar e-mail addresses are up-to-date

After initiating the transfer, make sure you check your e-mail
account because there will be a couple notification/confirmation e-mails
sent to your e-mail address. Just follow the instructions in the
e-mails. The whole transfer usually takes 1~2 weeks.


--
..autoquartz.
www.skcwebhost.com

chinnawut@gmail.com wrote:
> Sorry but I have not had experiences before, and just want to make sure
> this would work fine. How easy is it to transfer a domain from one
> registration company to another? Essentially, will there be any cost
> to be paid to the origin company and is it possible that in some way
> the origin company will lock this domain so that it'll be left expired
> if I don't continue with them?
>