virtualbox.org

Hi all,
I have just migrated to Linux (ubuntu 8.10) and I have Windows XP on a second HDD which I can boot and run from the BIOS menu fine.
What I am trying to do is get virtual box to see the existing XP and let me use that, is that possible?

With a lot of work yes.
Check the sticky Howto: Windows XP in both VM and native in windows guests