How to install 64 bit Virtualbox in Windows 7 64 bit OS?

[Karthick]

I have Windows 7 64 bit OS. I have installed Virtualbox4.3.2 when I try to install Opensuse in Virtualbox, It is saying this 32 bit computer you cannot use 64 bit OS. Let me know how can i correct this.[

[noteirak]

Select the 64 bits OS Type in the VM configuration

[Karthick]

I dont see any such option. Can you can say where can i find that info.

[noteirak]

In the VM configuration | General section, Basic tab, Version field.

[Perryg]

Also verify that you have enabled hardware virtualization in the hosts bios, and that nothing else is using VT-x (hyper-v or xp mode)