Malware dirtydecrypt help needed

hi guys and gurls really needing your help ive searched through google looking for a solution to no sucess thought i'd ask here since i know this is the site where all the gurus are "and yes i'm really trying to butter you all up but with good reason":licka: but i dont know where i got it from but ive ended up with this dirtydecrypt on my pc it has taken over all my fotos .JPG .PNG .PDF .DOCS and i cant restore them ive read plenty of palces that they cant be retrieved but befor i make the harsh decision to format my pc and loose all my pics and documents and probably half my programs cause i cant remember what i got lmao is there any help out there at all i know the digitalworldz guru like to get there teeth stuck in to things but any info or help would be great cheers