Windows 7 - My .NET Programs Appear Bigger

Hi yesterday i did fix it just like this to see if there is a problem in my computer. Then today when i come back in my computer all programs made with VB or .NET appears bigger! I uninstalled .net and VB i did everything but nothing. Please Help. Thanks in advance for responding!

This is an exemple of my game made with visual basic and now it is like this:

before:
[IMG]arsenal4.8tar.com/Car Race Game made by nalasra4 and xsamedx.PNG[/IMG]

Now:
[IMG]arsenal4.8tar.com/Now.PNG[/IMG]

Another Exemple:

Before:
[IMG]arsenal4.8tar.com/Calculator by arsenal4.PNG[/IMG]

Now:
[IMG]arsenal4.8tar.com/Now1.PNG[/IMG]

Another Exemple:

Before:
[IMG]arsenal4.8tar.com/WebBrower by arsenal4.PNG[/IMG]

Now:
[IMG]arsenal4.8tar.com/Now2.PNG[/IMG]

Please HELP!!

What seems bigger, the file size or the actual program window?

The Program Window

Please Help!! Someone please reply. i reinstalled my netframework i scanned my computer but nothing it sill appears big

Screenshots....because you not actually making any sense...

I putted ScreenShots, could you please help me now PEASE!? Please help!

The appearence of Windows forms depends on screen resolution.
There are many screen resolutions like 800x600, 1024x768 and so on.

It is not the problem of my screen resolution. I changed it so much time but it is still like this! please Help!