I purchased www.mendhak.com off domaintip.com last year. It's hosted elsewhere, but I think that's irrelevant.

The thing is, I want to shift the billing and administration for mendhak.com to another company, like www.abc.com, because it's easier for me to pay abc.com isntead of domaintip.com

Is this possible, and if so, how?

(If you didn't understand, I'll rephrase the question)