If you have difficulties with English, I sympathize, esco, and I don't mind helping. But there are also some difficulties with the explanation. I have questions:

1. "I want to cut and paste a line in page 1 to page2...." Is "page 1" the name of an Excel worksheet, or workbook, or what?
2. "a1 it says page 2, a2 xxxx, a3 xxxxx and in a4 there is a save button." Ok, so "a1" through "a4" are cell references, A1 through A4. The contents of cell A1 say "page 2"; again, is that a worksheet name? The next two rows have something other data in them, and there's a button below that?
3. "when I click save button it should see a1 page 2...." Do you mean that when you click on the button, Excel should display the worksheet named "page 2" (with cell A1 at the upper left)? Or that your program should go look at its contents for itself? Or what?
4. "....should see a1 page 2 or maybe page 3...." This "or maybe" part will have to be defined more exactly, before we're through. But we can save that for later.
5. "when I click save button it should see a1 page ?, then it cut and paste all line to page ?...." Ok, I'm more sure that these "pages" are worksheet names. (But not real sure; please confirm.) So when you click the Save button, you want something in Excel to cut all the lines from somewhere, and paste them to another worksheet. But which lines are "all lines", and where does it cut them from?
6. "but after paste to page 2 or 3, the line must go to next line..." This I don't understand.

We can do this; we just need a really clear explanation.