Dell Precision 530 OS install HELP!

Hey there,
I am currently working on a dell precision workstation at the moment and I have been replace allot of the parts (motherboard, RAM, CPU and heatsink).

After replacing I finally got the thing to boot up but it didn’t have an operating system so I have been trying to install one for a while now but I can’t seem to boot from CD.

I have also tried ghosting a hard driver with an image of generic XP and it blue screens. I have tried booting it from floppy disk (NT 4 server) but when it asks for the CD it doesn’t pick it up.

I have tried different IDE cables for the CD drive and three different drives. I have tried booting it in both OS install mode and without and get the same problem.

Anyone able to help with this?

Tim