Set Windows to Take Up the Whole Screen
You can set Windows to occupy your entire screen, so it looks just like it would if you were using a Windows PC. In Full Screen mode, Mac OS X and all of the Parallels Desktop controls are hidden.
To switch to Full Screen mode, do one of the following:
If you are using Mac OS X Lion and in Window mode, click the Full Screen icon (double-arrows) in the upper-right corner of the window.
To exit Full Screen mode, do one of the following:
If you are using Mac OS X Lion and one of the screen corners is set to show the menu bar, move the pointer to that corner and then click the Full Screen button in the top-right corner of the menu.