is their a wubi like installer so i can try open suse without partitions?
No, there isn’t.
Not quite the same thing. VB runs Linux inside a VM, the host OS is still taking up RAM. Wubi installs a Linux partition into a Windows file and adds an entry to the Windows boot menu to boot Linux. Once booted, only Linux is running, mounting the filesystem via a loopback mount. Good for getting users over from the dark side. 
It is possible to arrange something like this for openSUSE but one would have to do all the prep oneself; I have done something similar to Wubi for Puppy Linux, resulting in a machine that either boots W98 or Puppy.
So the answer is no, nothing like Wubi exists for openSUSE off the shelf.
Hello Ken_yap ,
Could you please contact me at kusum18 at gmail.com as i wish to know how you implemented a similar concept over w98 and puppy linux . Please email me at kusum18 at gmail.com as i could not get your email address.
You can find the details here:
I notice that 11.2 has these files in the top directory of the DVD:
openSUSE11_2_LOCAL.exe
openSUSE11_2_NET.exe
I think they start an install from Windows but I’ve never tried them. I don’t think they put an openSUSE instance inside a filesystem in a Windows file.