safe way to backup VDI for reuse after host OS reinstallatio

[bdutta]

Hi,

I need to reimage my PC (i.e. reinstall OS). The current OS (before reimaging) is WinXP-SP3 32-bit on a Core2Duo.
The target OS is same i.e. WinXP-SP3 32-bit, but could be a slightly newer build level. I have a bunch of Virtual-Disk images which I'd like to save and restore after my host OS reinstall. What is the best way to go about it ?

thanks,
bd

[bdutta]

add to add/clarify...
A way that would ideally allow me to preserve the snapshots as well... not just the last running image, per guest.

I believe, the above requirement will disqualify Export/Import !?!

[vbox4me2]

Backup all the VM xml and vdi files including the master virtualbox.xml file.