Thanks Ropey, that's what I was looking for.
Now my current issue is stripping the HP without having to use a crow bar and sledge hammer. They build these thing to be difficult to work on and I think they do it on purpose.

I only hope when I put the build together and add her existing HDs the RAID configuration will be recognized.

I backed up her HD about a month ago onto DVDs so the info's saved but her OS is Pista (Vista) and we don't have an installation disc so if the RAID is not recognized and I have to reformat............
The other option is to reformat, load Win 7 and see if I can pull the stored info off the backup discs but I would prefer to go with a 64 bit Win 7 and her Pista was 32 bit.
I would go with 7. Vista is dog slow and never should have been created. It was a placeholder for a good OS as Me was for XP, Vista is for Win 7.
An OEM key is good for either x86 or x64.
I'm a bit confused. You are moving from Intel Core 2 to AMD? m7760n = Intel Core 2.
Yep. Here's the specs for the one that just died.
HP Media Center m7760n
Processor, Operating System and Memory
Processor
Intel® CoreTM 2 Duo Processor E6400 Intel® ViivTM Technology
• 2.13GHz, 2MB L2 Cache, 1066MHz Front Side Bus
Operating system installed
Genuine Windows Vista™ Home Premium
Standard memory
2048MB PC2-4200 memory(2x1024MB for ultimate performance) (expandable up to 4GB)
Memory type
DDR2-SDRAM
Memory slots
4 DIMM (240-pin, DDR2) (two available)
Internal drives
Internal hard disk drive
500GB SATA hard drive (2 x 250GB)
Hard disk drive speed
(7200 rpm)
Optical drive type
SuperMulti DVD Burner
Optical drive speed
16x DVDR, 8x DVD+RW, 6x DVD-RW, 8x DVD+R DL, 4x DVD-R DL, 5x DVD-RAM, 16x DVD-ROM, 40x CDR, 32x CDRW, 40x CD-ROM
System features
Memory card device
15in1 memory card reader
Modem
56k modem
Network interface
Ethernet 10/100BT integrated network interface
Video adapter
Intel® Graphics Media Accelerator 950
Video RAM
32MB dedicated graphics memory. memory. Up to 224MB Total Available Graphics Memory as allocated by Windows Vista™
Compatible interactive TV services
NTSC TV tuner and over-the-air ATSC high-definition television tuner
Keyboard
HP wireless keyboard with extended range (up to 16 feet)
External drive bays
2 external optical drive bays, 1 internal HDD bay, 1 external HDD bay
External I/O ports
6 USB 2.0 ports (2 in front); 2 FireWire®-IEEE-1394 ports (1 in front)
Expansion slots
3 PCI slots (occupied) 1 PCI Express x16 Slot(z) (available)