Kiyarash

Hi .. I can not open the page on the internet PLz help me ... And i dont know why i cant yahoo Massenger and raidcall Operating system:Windows 7 Home Premium (32 bit) System root: C:\Windows Available physical memory: 3326 MB CPU: Pentium® Dual-Core CPU E5200 @ 2.50GHz Drive Info: C: 74.47 GB D: 74.54 GB E: 74.54 GB F: 74.54 GB Internet Explorer: 8.0

I dont know when im conecting to internet the icon of network and sharing center dont change and its like the first .. I Dont know i am conected or no .. please help me what can i do ? Thank you