g4L on http://sourceforge.net/projects/g4l
backup the image(/3 of your size disk on the machine) on ftp server(raw mode transfert)
restore the image from the ftp server(raw transfert mode) with the livecd g4l on your empty vm esx/proxmox
re-organize your modules linux(depmod -a ….), kudzu,, would need to correct the initrd(/sbin/mkinitrd -v -f /boot/initrd-2.2….)