The subject tells it all.
*EDIT of original question *
While I am seeing many people having difficulties with dual-boot Ubuntu with Windows 8 I came to this idea (as my Linux partition is too small for installing VMware Converter 4.01).
Can I "back-up" somehow my existing and running Ubuntu 12.04 install into a bootable IMAGE file or ISO, which I can then play-back with VMWARE Player or convert into something BOOTABLE from a CD-ROM or USB-STICK ?
Thanks in advance