If I do not want the information on my web page to be used without my companies consent, is a statement sufficient with the user clicking on agreeing to the terms of this statement or for full legal protection is copyrighting required?
web page and get a wealth of really good information. One thing I found out there last week is that you don't have to actually register a copywright for it to be in force in the U.S. If you do register it (with a form, a copy of the work, and a $30 check) then if you are infringed, sue, and win you are possibly entitled to a bigger settlement (things like lawyers fees and punitive damages come to mind).
Read the FAQ and see what is required. For protection against actual damages the requirements are pretty easy.
You'd have to ask a competent lawyer about the value of the EULA language that no one reads during every install. The advice I got was not very favorable about them.
People will use what they like anyway. Make sure you don't post info that would compromise proprietary information. You really won't have control of what people do with what you post and will probably find prosecution totally infeasible.
You retain your copyright even if you don't put the usual "Copyright 2004 John Doe" at the bottom of your page, but you should. You may want to add an explicit "Article reprint fee $500" notice.