All right,

so if I understand it right you need to get rid of tabs and then format your first lines.

As to tabs:
To get rid of the completely do this:
First backup your document, just to be sure.
Then:

1. Hit CTRL + H (Find and replace)
2. In "Find what" field type ^t; that is a sign for tab character.
3. Into "Replace with" field type either blank space or leave it blank.
4. Hit replace all and tabs will be replaced by what you typed into "Replace with" field.

Creating macro:
Well, in this case I can give you only rough explanation, because I would need to know what exactly you need but:

1. Position your cursor at the begining of the line you want to format.
2. Press ALT + F8; this will open Macro window.
3. Then press "Create" button.
4. Name macro and give it a shortcut. I advise you to use CTRL + 3 and higher.
5. If you want to select the first row then press SHIFT + END button.
6. Now, do the formatting you need to do.
7. Save macro.
8. When you will want to do the formatting, then just position your cursor at the begining of the line/row and press the CTRL + something combination for the macro.

Well, I hope I have answered your question.

Since tomorrow I will be gone for 14 days and without internet, so if you will have any other problems, hopefully somebody else will help you. :-)

mike