ubuntu 11.10 space problem.

[cray.x]

hello guys i recently installed the ubuntu 11.10 on virtual box, i alloted 8 GB of space to it earlier. now I'm running out of space! plz help and tell me how to resize it or attach a new hard disk to it!
the host OS is Win 7 ultimate
guest OS ubuntu 11.10

 

[doomgiver]

make another hdd, and use that instead (i hope you dont have data that you want to copy from the old disk to the new one)