- On XP guest menu, go to Devices -> Shared Folders
- Add a new share (ex. C:\SharedFolder)
- On Ubuntu 8.04 guest create a new directory (ex. /home/MountFolder)
- Then, run
mkdir /home/MountFolder
mount -t vboxsf SharedFolder /home/MountFolder
mkdir /home/MountFolder
mount -t vboxsf SharedFolder /home/MountFolder
net use z: \\vboxsvr\SharedFolder -p