serious problem -just in time de-bugger,SSME

Question

Hai all....

I've got two serious problem in my system...

1)Whenever i switch on the internet and few minutes after browsing i'am getting a pop message called Visual studio just in time debugger stating an unhandled windows exception has occured on svchost.exe [xxxx]..when i close this window my internet stops working further i cant browse...so i tried to hide this window from desktop dragging to corner and  continue but still many pop-up windows occur disturbing my work........

2)The second problem is whenever i use SQL Server Management Studio Express my sytem gets hang up and i have to restart it ..At times it works well but wen i try to open some big tables it again hangs up....

For both the problems i googled many a times and couldn find soluitions...

Hope i made myself clear .....and Help me solving this issue..................

Thanks in advance....