If you want to have a shared folder linking you Kubuntu desktop to a virtual XP – click Settings -> Shared Folders (in Virtual Box pane)
fill in all the info for your folder you want to share,
then in Windows,
Run (command) -> type in “net use x: \\vboxsvr\Folder" (no quotes) where folder is a folder in your home directory.
This will mount your shared folder into Windows.
