installing OS in virtual box

simple n quick~=)

1. assume you already have install virtual box, you can see vitual box menu under application --->system tools ----> virtual box
2. create new 
3. the new virtual machine wizard will be open click next
4. type name of the virtual machine name that you desired
5. choose the OS type operating system and version
6. Select the amount of memory if you use much just set as the deafult
7. create the new hard disk
8. next again
9. choose dynamically expanding storage and next
10. choose location and size or leave it as default
11. and finish!

Thats not all..you still need to put ubuntu disk and continue install normal installation

1. insert your latest ubuntu cd
2. click at setting
3. at the menu on the left site of the setting for your os click at storage 
4. change the CD/DVD device path to the path cd that you already install
5. click ok
6. start your os then it will be boot like normal installation
7. the end~

 now i got another ubuntu in my ubuntu~=)