Using Word 2000

I'm setting up a form to be used electronically/hand written and in several
areas need to show 3 blank lines for comments like this:
__________________________________________________ ________
__________________________________________________ ________
__________________________________________________ ________

The typing would start on the first line and continue down. What happens is
that the other lines get pushed down. I want the typing to be fixed on the
lines. I've tried drawing lines, using cells in a table, etc. and it always
gets pushed down.

Any way to do this or is there a better option? Thanks.