Compaq Presario 6019WM could I change CPU and how

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[ WCPUID Version 3.3 (c) 1996-2004 By H.Oda! ]

Processor #1 : Intel Pentium 4 / 860A561D
Platform : Socket478 (mPGA478 Socket)
Vendor String : GenuineIntel
CPU Type : Original OEM Processor (0)
Family : 15 (0)
Model : 1 (0)
Stepping ID : 2 (-)
Brand ID : 8 (-)
APIC : 0
HT Log.CPU Cnt : ----
Name String : Intel(R) Pentium(R) 4 CPU 1.60GHz

Internal Clock : 1594.82 MHz
System Bus : 398.71 MHz QDR
System Clock : 99.68 MHz
Scalable Speed : 133.33 MHz
Multiplier : 16.0

L1 I-Cache : ----
L1 D-Cache : 8K Byte
L1 T-Cache : 12K uOps
L1 Cache : ----
L2 Cache : 256K Byte
L2 Speed : 1594.82 MHz (Full)

MMX Unit : Supported
SSE Unit : Supported
SSE2 Unit : Supported
SSE3 Unit : Not Supported
MMX2 Unit : Not Supported
3DNow! Unit : Not Supported
3DNow!+ Unit : Not Supported

Host Bridge : 8086:1A30.04 [Intel 845/845D/845MP/845MZ]
IDE Controller : 8086:244B.05 [Intel 82801BA (ICH2)]
VGA Device : 10DE:0322.A1 [NVIDIA GeForce FX 5200]
Memory Size : 1280M Byte
Memory Clock : 132.90 MHz
: C6,2,M:1800,D:0805,R:0800

OS Version : Windows XP Version 5.1.2600 Service Pack 2