Privacy policies are pretty easy. Check out FreePrivacyPolicy.com or just plagarize from someone else's website.
As for your terms of service, it depends on whether it's a real contract or one of those "by visiting this website, you agree to" things. The latter is pretty pointless (and is almost certainly unenforcable), and you may as well just plagiarize that too.
But if your ToS is a real contract (e.g. "you will pay $20 and myWebApp.com will..."), then you should tread more carefully. If you do it without a lawyer, it could come back to bite you. Just make sure you have a "maximum absolute liability" clause that (provided it holds up) sets your liability to whatever they paid you. That should insulate you from a lot of problems.
As for your website’s terms and conditions, your purpose in posting this is to protect your company. Clauses that you should include are those that protect your intellectual property rights, specifying the type of license you make available if any regarding the use of your intellectual property (your logo, pictures, articles, any written materials and images), ensuring that users are over 18, waiving liabilities regarding your website (in the event access to your website is interrupted for example), or disclaiming the remarks of third parties.
See: http://www.ncsl.org/default.aspx?tabid=13463 Note – this is not legal advice, and no attorney-client privilege is established.