Word Processor Customization Code

I am looking for something that can add worksheets to Microsoft Word that function in the same way they do in Excel. I don't want to have to create separate files for each worksheet; I want them to save all within the same word doc. I want to be able to click through them just like you can in Excel. I want to be able to rename them also. In addition, I want the ability to save this in a way so that when I e-mail this file, these worksheets will be combined in one document so the recipient can view them all without having to have this same software code. I am open to using other program than Word- such as openoffice- but I an accustomed to, and really like, Microsoft word 2003. So, to recap, I need a solution that will allow for the worksheet function of excel to work in an identical way in word, or some other similar word processor. I also need these files to be viewable by someone who just has a normal copy of Microsoft word.