I would suggest booting from the Live CD, to see if / how everything runs. Just check the BIOS to make sure the Boot priority is set to boot from CD first.
If it runs from the Live CD, test everything
out before taking the plunge.(sound,ethernet, video, etc)
Most servers have weak vga cards, so you may want to check inside to see if there is room for an Add-On card.
Good luck, Richard