Live CD use without rebooting?

[SirSilhouette]

I'm curious...
Does there exist a live CD that you can use without having to reboot?
I'm thinking of something like ELE (or is it Embedded DSL? or both?), which uses a batch file to boot into a qemu session and load the OS off the pendrive, all while in Windows.

Now, the only issue with that is that it only uses a pendrive (i'm pretty sure. Correct me if i'm wrong, as i don't have access to either). Is there another live CD distro that can be booted without leaving Windows? If not, is there maybe a way to remaster the ISO so that it'll work like that?

[anony]

Qemu:

viewtopic.php?p=698

Other:
VMWare Player:

http://www.vmware.com/products/player/

http://www.vmware.com/vmtn/vm/

Xen:

http://www.cl.cam.ac.uk/Research/SRG/netos/xen/

OpenVZ:

http://www.cl.cam.ac.uk/Research/SRG/netos/xen/

WinLinux: (see ibiblio).

http://www.winlinux.net/

Or perhaps you can modify Loadlin:

http://elserv.ffm.fgan.de/~lermen/