I had this kind of thread before too but that time I was
unknowingly using the 32 bit version of the Virtualbox.
anisha@linux-trra:~> uname -a && cat /etc/issue
Linux linux-trra 126.96.36.199-1.2-desktop #7 SMP PREEMPT Tue Jan 22 10:34:11 IST 2013 x86_64 x86_64 x86_64 GNU/Linux
Welcome to openSUSE 11.4 "Celadon" - Kernel \r (\l).
Now, when I am trying to install 64 bit openSUSE 11.4 on it,
it says this is a 32 bit computer, you can't use 64 bit software
Why is it saying that? What to do?