Class not registered, WININETdll not found and a myriad of other things .. please help

I can't run or open any programmes other than opera exe as I get the same messages so I can't download and run the malware files or combo fix etc.

What is happening to my machine? I have an Acer 6920 Aspire PLEASE HELP. Ihave posted since yesterday on many sites with no replies..... Am I sounding too desperate!!!!!