Help please! Drive not showing true space.

[Traducer]

Just built up a new computer and seem to be having some problems with the hard drive settings.
I've not used SATA before and this time around all my devices are SATA.
My Western Digital 250GB Drive is only showing up as 127GB total memory, now that can't be normal.
My motherboard is a DS3 Rev 3.3.
Is there something in the BIOS I am missing? any help would be great, thanks.

 

[Traducer]

I have SP2, always have.

 

[Traducer]

Good point the version of XP I have does not have either of those built into it.
That may explain a few problems I have been getting.