Drag and Drop Problem in Virtual Box

Go to VirtualMachine's Settings->General->Advanced->Shared Clipboard (Bidirectional)
Reboot your virtual machine.

On the Network Adapter 1 page, no host-only network adapter is selected (problem in Virtual Box)

Probably, the virtual host-only network wasn't set up yet. Here's is how you can fix this:

1. From the main menu, select File > Preferences (Ctrl+G) - NOT the settings of a single vm
2. Select Network in the list on the left
3. You should see an empty white box with "Host-only Networks" at the top. On the right, there are three buttons to manage them. Click the topmost one (with a green plus symbol). A new Host-only network will be created and added to the list.

Normally, the settings of the new network will be ok, but for completeness, I give the default values here. You can access the settings for the host-only network through the screwdriver button on the right.

• Adapter:
  • IPv4 address: 192.168.56.1
  • IPv4 Network Mask: 255.255.255.0
• DHCP server:
  • Enable server: checked
  • Server Address: 192.168.56.100
  • Server Mask: 255.255.255.0
  • Lower Address Bound: 192.168.56.101
  • Upper Address Bound: 192.168.56.254

You can change these settings to your liking, as long as they're consistent.

How to install Virtual Box in Backtrack-5

Backtrack 5 doesnt come with the kernel headers installed.So you will need to download them and then proceed with installing virtualbox. The commands are listed below
root@bt # prepare-kernel-sources
root@bt # cd /usr/src/linux
root@bt # cp -rf include/generated/* include/linux/

After this is done, edit /etc/apt/sources.list as shown below and download virtualbox
root@bt # echo deb http://download.virtualbox.org/virtualbox/debian lucid contrib non-free >> /etc/apt/sources.list
root@bt # wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
root@bt # apt-get update
root@bt # apt-cache search virtualbox
root@bt # apt-get install virtualbox-4.0

  

OR

just go on official site of virtualbox:

https://www.virtualbox.org/wiki/Linux_Downloads

and then download following:

Ubuntu 10.04 LTS ("Lucid Lynx")  i386 |  AMD64 

i386 for 32 bit os

and AMD64 for 64 bit os

then type 

dpkg -i <name of your .deb file with its location>