Help with insurance claim

Hi folks, I need help for my insurance claim, we were burgled new years eve and the scum stole my flight sim computer. For the claim I have to provide details of a replacement as I had built it my self.
The spec of the computer is as follows
ASUS P4P800 motherboard
Pentium 4 3.2 Gig
Sound Blaster Audgi Sound card
ATI Sapphire HD 3650 Graphics card (512mb)
4X 1Gb pc3200 memory Crucialor Kingston
120Gig 7200rpm western Hard drive
360Gig 7200rpm western Hard drive (SATA)
600W Power supply
3.5 inch floppy drive
DVD Read
DVD Read write
Case fans X 4
Case with clear side
At the time of building ( aprox 2004 ) this was high spec, what would be it's replacement today?
Many thanks in advance Chris
The spec of the computer is as follows
ASUS P4P800 motherboard
Pentium 4 3.2 Gig
Sound Blaster Audgi Sound card
ATI Sapphire HD 3650 Graphics card (512mb)
4X 1Gb pc3200 memory Crucialor Kingston
120Gig 7200rpm western Hard drive
360Gig 7200rpm western Hard drive (SATA)
600W Power supply
3.5 inch floppy drive
DVD Read
DVD Read write
Case fans X 4
Case with clear side
At the time of building ( aprox 2004 ) this was high spec, what would be it's replacement today?
Many thanks in advance Chris