u have to make a folder on a usb flashdrive that says PS3 then inside that another folder named SAVEDATA. put the file on there u will have to compress it first though.
so once u have it on the usb flashdrive stick that into your pc open it up and u should see the folder titled PS3 right click on that and go to send to then click on compress it will make another folder, take the compressed folder go to MF then click on upload drag that compressed folder into MF upload screen then click begin download.
once its done d/ling click the share link and click copy link come back here and post the link and your all set hope that helps ya out.