hello
folders can't be changed to exe's like that. most likely the virus just copied itself using the name of the folder and then hid the folder (or deleted it - but unlikely), in this case all the folders are still there, they are just hidden or superhidden. it's easy to hide files from explorer so you should try using another file manager application to get to the files (FAR, Total commander etc).
also send one of those exe's to the lab so detection can be added:
http://support.kaspersky.ru/virlab/helpdesk.html?LANG=en