First method: I think of the first method.
Click office Button/Excel options, and then open the Excel Options dialog box.
Click the Advanced option on the left to move the scroll bar down to the show options (S) section in the worksheet.
The sixth item is "Show gridlines." In the default state, this item is selected.
Figure 1 showing gridlines
Uncheck with the mouse click, and then click OK in the lower-right corner. You can not display gridlines on this worksheet.
※ You can not only display and hide gridlines, but also set the color of gridlines.
My point of view: In fact, not even the network line, and word what is the difference?
The second way: if you're just inserting a picture, that's fine.
And in some ways it's better than Word2007. You can also use the method of merging cells If you are only a partially hidden gridline. Also, there are four merge options in version 2007.
Computer Tutorials Figure 2 method for merging cells
The third method: Show/Hide Feature
There are more simple ways to operate.
The operation method is as follows:
1, select one or more worksheets.
2, on the View tab, in the Show/Hide group, clear or select the Gridlines check box to hide or display gridlines.
Figure 3 "Show/Hide" feature