If you are planning on installing another OS soon anyway, you can download a 3 month trial of Windows Server 2008 from Microsoft and all the drivers are on the HP site fro that that OS.
I got a copy of Server 2008 standard through work for learning, Microsoft download manager was playing up hell earlier, kept refusing to download the thing.
Managed to get it installed though Just setting up RDP so I can do the rest remotely
Job done