Hello,
It's a convergence issue. Go into the main TV menu under video settings and look for convergence. If it has an auto convergnce select that and wait a minute the TV will adjust itself and give you a clear picture.
If the TV does not have an auto convergence and just regular convergence than select this. It will give you a grid pattern on your TV and you have to move the curser (using TV remote) and adjust each "point" so that each line is perfectly white. If you notice red or blue anywhere on that "line" then you have to adjust using the up, down, left and right arrow keys to "line up the red and blue lines with the nearest white line. It taked time and patience to do, but when completed, all lines on the grid pattern should be pure white and you will have a great looking picture.
You have to do this will all TV inputs (Video1, Video2 and so on) the reason Zoom looks good, is because you never used that screen as much and so the lenses didn't have a chance to get out of synch.
RPTV's are made of the three lenses (red, Blue and Green) and as you watch TV, these lenses slowly get out of alignment. So you should do a convergence about twice a year to make sure nothing is out of whack.Please run the convergence feature on your TV. Its giving you duble image because the red, green, and blue guns are disaligned. By running convergence it will realign the guns properly. You need to run the convergence feature at leat onece a week. Please note this is only for CRT rear projection tv's and I assumed it was. If it is an LCD rear projection, then there's nothing you can do to fix such thing, but call a repair person. But if doing the convergence doesn't fix the problem, you need to call a repair person. But I hope you won't have to. Please refere to your tv's manual on how to do converegence and how to overlap the crosses because every CRT projection tv is different.
Good luck
Windows 7 Starter edition comes with one desktop background, which can't be changed or customized. Please see this link for details.
http://windows.microsoft.com/en-US/windows7/Personalize-your-computer
To change the desktop background
Open Desktop Background by clicking the Start button 
, clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Desktop Background.
Click the picture or color you want for your desktop background.
If the picture you want to use is not in the list of desktop background pictures, click the Picture location down arrow to view other categories, or click Browse to search for the picture on your computer. When you find the picture you want, double-click it. It will become your desktop background and appear in the list of desktop backgrounds.
Look for pictures in other locations on your computer
Under How should the picture be positioned, choose to have the picture fit the screen, tile, or be centered on the screen, and then click OK.
NoteIf you choose to have a centered picture as your desktop background, you can also have a color background to frame your picture. Under How should the picture be positioned, click Change background color, click a color, and then click OK.
Open Desktop Background by clicking the Start button 
and clicking Control Panel. In the search box, type desktop background, and then click Change desktop background.
Click the picture or color that you want to use for your desktop background.
If the picture you want to use isn't in the list of desktop background pictures, click an item in the Picture location list to see other categories, or click Browse to search for the picture on your computer. When you find the picture that you want, double-click it. It will become your desktop background.
Look for pictures in other locations on your computer
Under Picture position, click the arrow and choose whether to crop the picture to fill the screen, fit the picture to the screen, stretch the picture to fit the screen, tile the picture, or center the picture on the screen, and then click Save changes.
Note
If you choose to have a fitted or centered picture as your desktop background, you can also frame your picture with a color background. Under Picture position, click Fit or Center. Click Change background color, click a color, and then click OK.
Tip
To make any picture stored on your computer (or a picture you are currently viewing) your desktop background, right-click the picture, and then click Set as Desktop Background.
The Set as Desktop Background option
You can add more desktop backgrounds to your collection from the Personalization Gallery on the Windows website.
, clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Desktop Background.
2. Clickthe picture or color you want for your desktop background.
If the picture you want to use is not inthe list of desktop background pictures, click the Picture location down arrowto view other categories, or click Browse to search forthe picture on your computer. When you find the picture you want, double-clickit. It will become your desktop background and appear in the list of desktopbackgrounds.
Look for pictures in other locations on your computer
Figure 1
Figure 2
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