Please help to retrieve deleted file

Anyone can assist to retrieve an important data file that was deleted by Avast due to virus infection? The said data file which was in C drive was infected by win32:Hupigon_ONX [Trj].

I had submit a ticket to Support 2 days ago but no response yet.

Using the Virus Chest: http://www.avast.com/faq.php?article=AVKB21

if moved to chest, you can restore, if deleted it is goneā€¦