Copying of oscommerce from one domain to another

1) I have 2 domain A & B and would want to copy the whole oscommerce from domain B to domain A and make sure it is in full working condition after the copying. 2)To Fix the issue about sending mail from the admin > tools > send mail. (We are using the yahoo hosting) 3) To add 3 contributions (will provide the url of the contributions) Note: - Experience bidder only please. - Must complete the job within 1-2 days. Able to start immediate. - Must make sure the site is in full working condition and fix any issues arise from the site copying - Must ensure domain B is in original condition - Must have MSN communication - Due to different time zone,prefer you are from GMT+8. - You will need to backup all the files. - plse bid only if you are able to commit the job within 1-2 days. Thank You.