Insert, Personal Information, logo. Below is the information from Publisher's help.
Open a Microsoft Publisher-designed publication that contains a logo, or insert a
logo placeholder as a component.
On the Insert menu, point to Personal Information, and then click Logo.
If necessary, reformat the information, and resize and move the component.
To edit the logo, select it, and then do one of the following:
To change the text in the logo, click the in the logo and then type the text you
want.
To change the picture used in the logo, subselect (subselect: To select individual
shapes within a group.) the picture, right-click the picture, and then choose the
picture you want.
To change the logo design, click the wizard button and make the changes you want in
the Logo Designs and Logo Options task panes.
To replace the logo with a logo picture file that you already have, click the wizard
button, click Logo Options in the Logo Designs task pane, click Inserted picture, and
then click Choose picture to locate the picture file.