Try formatted Tabs with Underscore leader. Example from Using Microsoft Office 2003:
1) Type in the text, including tab characters, which will comprise the final form. In this case:
Last Name <tab> First Name <tab>
Address <tab>
City <tab> State <tab> Zip <tab>
2) Position the insertion point inside the first paragraph, and choose Format, Tabs. Set two tab stops - a left-aligned tab at 3 inches, with underscore leader (Type 4); and a right-aligned tab at 6 inches with underscore leader.
3) Position the insertion point inside the second paragraph, and set a right-aligned tab at 6 inches, with underscore leader.
4) Position the insertion point in the third paragraph and set three tabs: left-aligned at 3 inches, left-aligned at 4.5 inches, and right-aligned at 6 inches, all with underscore leader.
5) If you want to fine-tune individual lines, click inside the line and then drag tab stop icons on the ruler to whatever position you like.
When I read the book I gave this a try, sort of on a whim. It works great, but can be difficult to remember, so I keep a few samples I created lying around.
Good luck!