Hi Bill,
You can adjust the width of the table using the following code
table.Width =200;
and you can center align the table in the page by aligning the paragraph in which the table is drawn. Here is a code for aligning the paragraph.
paragraph.ParagraphFormat.HorizontalAlignment = HorizontalAlignment.Center;
and here is a sample for your reference:
InsertTable.zip
Please take a look and let me know if you have any questions.
Thanks,
Ajish.