I also don't think you should be looking at a tool - cheap or otherwise. What you appear to need is expertise that is complementary to yours. A one-man show can be a difficult venture.
Why would an intern want to work with you? What are you offering? And would you want to trust your venture to an intern anyway?
Have you thought about hooking up with a professional QAer in exchange for a piece of the eventual profits? Or, sometimes a potential first customer can provide the expertise for you in exchange for a very steep discount (it might need to be 100%).
As far as what you should be testing - of course you should test it all. Perhaps in this order:
- basic communications
- Joe (firstname.lastname@example.org)
[This message has been edited by jstrazzere (edited 01-13-2003).]