Microsoft Word: How do I gray only certain cells?

I'm trying to create an invoice template, and I need the

Subtotal

Discount

Total

cells to be on the far right, but I don't want cells to the left of them, how do I make the cells invisible?

Something like this:

__________________________

|________|_______|__________|

|________|_______|__________|

|________|_______|__________|

I want these invisible|__________|

I want these invisible|__________|

I want these invisible|__________

Microsoft Word: How do I gray only certain cells?microsoft powerpoint

|Select the border that you would like to hide, go to:

menu Format%26gt; Borders and Shading...

on the Borders tab and select Setting: None.

Look on your right for Preview.

Uncheck any vertical and horizontal line as you like.

(This will make the selected border disappear but keep the top and side border appear.)

Ht2?