Can you explain what issues you are facing more clearly?
From the layout problems you mentioned, I'm going to take a guess and assume you mean the windows-98 style start menu look being an issue?
If that's so, you may have triggered windows classic theme by mistake. Can be easily corrected.
Go to your desktop, right click any open area and choose 'Personalisation'
There choose any theme under Aero, or Windows 7 Basic.
If your issue is with icon size, I'm sure your resolution is okay, just right click on your desktop, In the view option, Choose between Large, Medium and small.
If you are meaning the 'Desktop, Raccolte' box on your taskbar, thats simple to get rid of too.
Right click your taskbar, choose toolbar, and in the next sub-menu, untick the desktop.
For your internet problems, It won't hurt to start from the groundup, Check if your wire is connected properly (If only I got money everytime that happened to me

)
Please elaborate what you think may have triggered this.