i am really sorry for you. some time ago i was in the same situation while downloading the file i was attacked, but likely i didn't loose any information from my pc but i had ti reinstall the whole system.
I would recommend Avast.com software
The Best Anti-virus is Kaspersky...
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i'm sorry to hear.
i can recommend you on my anti-virus - AVG interent security 2012.
it works really quiet, easy to use it and does the job on the best side.
That was some clever way to use Acrobat's Adobe as a gate for malicious attack, usually I get the warnings from queued files in my downloads folder.
I can't say that this antivirus will help you , but it works in my windows perfect . You can try it -Avira Free Antivirus (http://www.avira.com/en/avira-free-antivirus)