Sorry to say but Skype is not a tool for business unless you wish to wake up one morning and find that your comm's will be cut in 30 days.
Any business start up or small business should not touch Skype. After they dumped us with the 0207 issue I have been looking and doing alot of research and they don't even have to play by the rules of OCOM or any other telephone regulator.
Read up on the 0207 issues in these forums and open your eyes