New Built PC Keyboard Problems - Please help

Hi there

I have just built my first PC. I wanted to learn more about PC-so thought I would try and build my own would be good start.
Its gone NOT too good at present, but I guess thats the learning curve.

I seam to have a problem with the PS 2 Keyboard. It doesn't work and all I get is the 3 lights of Num Lock/Caps Lock/Scroll Lock are all LED lit up.
I tried another Working PS2 keyboard and this did the same, but I could get a USB keyboard that worked in the USB socket. Any ideas on whats going wrong with the PS 2 keyboard and what should I do? - could this be another MOBO thats not working?
Could it be my BIOS settings?
The PC starts fine in XP


Look forward for some help and advise, really would be grateful, best regards:giddy:

Spec:
AMD 64 3200+ (+ CPU Heatsink and Fan)
MSI KN8 Neo2 Platinum MOBO
MSI 5500 256 AGP Graphics cards
1 GB RAM - Crucial
40GB HD
Antec SmartPower 400W PSU
Iomega ZIP
Floppy Drive
CD-ROM - Ordered a new ROM