Please help

i have a compaq presario w/these specs
HP/Compaq name: Echo
System BIOS Supplier ASUS/Award
Form Factor uATX
Processor Brand Intel
Processor Socket Type mPGA478
Processor Family P4 and Celeron (Willamette, Northwood)
Proc. Front Side Bus Freq. 400 MHz
Chipset Name 845GL
Chipset "North Bridge" 845GL
revision/stepping A1
Chipset "South Bridge" ICH4
Revision/stepping A1
Super I/O ITE
Revision/stepping IT8708F
Flash BIOS Device 2 MB Flash EEPROM
Memory Type DDR
Memory Speed PC2100/PC1600
Memory Sockets 2 DIMM
Maximum Memory 1 GB
Graphics Supplier Intel
Graphics Configuration Down, In Chipset
Onboard Graphics Memory UMA/up to 64 MB
Graphics Connector (AGP) None
TV-Out Device No
TV-Out Configuration AGP TVout card
Audio AC'97 Down
AC'97 CODEC Device Realtek ALC202A
Audio Jacks (Legend below) M,LI,LO,SO
M Microphone
LI Line In
LO Line Out
SO Speaker

My question is will a celeron 2.5 ghz/128/400 will it work in this board, and if not what kind of board will I have to buy.:cry

 

By the chipset, it would appear you can use the Celeron.
The HP site
http://welcome.hp.com/country/us/en/support.html
(for compaq) does not list a compaq echo, only EVO - is it echo ?
From the link below,
845 chipset- compaq/hp
The Intel 845 chipset includes the 82845 MCH designed to support the Pentium 4 processor with an FSB speed of 400 MHz.
NOTE: The two types of heat sinks are not interchangeable. Also, these systems support processors using the FC-PGA2 package only.

http://h20000.www2.hp.com/bc/docs/s...329001-001_rev4_us/TPM_329001-001_rev4_us.pdf