Gbolimo,
i cant really answer that question, the only thing i know is when i called their office here in the US, i was told they don't have business in Nigeria, that they are only in America and Asia.
the domain name thing, i don't know about that, but i would advise you you may want to confirm things yourself, try calling Texas energy holdings yourself and try to confirm. i think it is better than to get ripped off.

I got interested in the LAIF consulting issue as a recruiting agent for Texas Energy Holding INC. A friend of mine sent me a mail to help me confirm with the company i.e Texas Energy Holding inc. about the LAIF consulting people because they are requesting for processing fee and that he passed their online test. i gave texas energy holding inc a call (am a masters' student in the US) this morning and i was tol that they dont have anything in nigeria and that they are not recruiting in nigeria. so PLEASE BE CAREFUL of 419