Yggdrasil - Fountaine of knowledge and understanding

Progs needed:
extundelete (check repository or http://extundelete.sourceforge.net/)

#change dir to place where can u write/read with enought space
cd /YOUR_FOLDER_W_RW_RIGHTS

#remount(umount/mount) disk with files w8ing for restore with read only att

umount /dev/xxx

mount -o ro /dev/xxx /media/yyy

#see which inode belongs to you desired folder(with deleted files)
ls -il /zzz

#do the job
extundelete /dev/xxx --restore-inode aaaa

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extundelete has options for filtering like restore whole folder, restore since date or restore all. Check documentation.