Hey people, I am newbie (student-12 years old). I need advice overclocking my PC. I bought my PC at early 2003 (Jan 2003). I have 6 PC's in my house but 1 PC was given away. 3 Desktop PC's - 3 Laptop PC's. Please advice me on overclocking my 1)Main desktop PC. I have the specs of my PC's here. I don't wan't to spend any money on upgrading or buying anything. Please help!!! Urgent!!! I don't want to burn or kill anything. Your help will be very apreciated.

1)My main desktop PC:
System Type :DIY
CPU :Intel P4 3.00GHz HT OC'd to 3.20 GHz HT (Socket 478)
Motherboard :ASUS P4P800 Deluxe
RAM :2x512MB Kingston PC3200 DDR
Casing & PSU :iCute Casing & iCute 450 WATT PSU
VGA :MSI GeForce FX 5600-VTDR256MB (AGP)
Sound :Built-in
Harddisk :2x80GB Maxtor SATA (8MB) 1x40GB WD PATA (8MB)
Monitor :Samsung 17 Inch 172T LCD TFT (DVI)
Optical Drive :1 LG DVD+/-R/RW & 1 ASUS 16x DVD-ROM
Multimedia speaker :Edifier 2.1 Channel
Keyboard :A4 Tech Comfort Wrist (USB)
Mouse :Logitech MX51 Gaming Grade Optical Mouse (USB)
Date bought :Early 2003

2)My 2nd desktop PC:
System Type :DIY
CPU :Intel P4 2.60GHz HT (Socket 775)
Motherboard :ASUS P5RDM VM
RAM :2x512MB Kingston PC4200 DDR2
Casing & PSU :iCute Casing & iCute 450 WATT PSU
VGA :ASUS ATI Radeon X300 64MB (PCI-E)
Sound :Built-in
Harddisk :1x160GB Maxtor SATA2 (16MB)
Monitor :Samsung 15 Inch 153V LCD TFT (VGA)
Optical Drive :1 Imation 52x32x52 CDRW & 1 ASUS 52x CD-ROM
Multimedia speaker :Edifier 2.1 Channel
Keyboard :A4 Tech Comfort Wrist (USB)
Mouse :A4 Tech Optical Mouse (USB)
Date bought :Early 2006

3)My 3rd desktop PC:(Laggy)
System Type :Branded
CPU :Intel P3 800MHz
Motherboard :OEM
RAM :2x128MB Kingston SDRAM
Casing & PSU :OEM & OEM 450 WATT PSU
VGA :nVidia Riva TnT 32MB (PCI)
Sound :Creative Vibra 128Bit (PCI)
Harddisk :1x40GB WD PATA (8MB)
Monitor :OEM 15 Inch CRT (VGA)
Optical Drive :OEM 52x CD-ROM
Multimedia speaker :Edifier 2.1 Channel
Keyboard :OEM (PS/2)
Mouse :OEM (PS/2)
Date bought :Late 1999

4)My main laptop PC:
System Type :Branded (IBM Thinkpad T43)
CPU :Intel Centrino 1.83GHz
Motherboard :OEM
RAM :2x512MB PC667 DDR2
Casing & PSU :OEM
VGA :ATI Radeon Mobility X300 64MB
Sound :Built in
Harddisk :OEM 1x80GB Laptop HDD
Monitor :OEM 15.4 Inch XGA LCD TFT
Optical Drive :OEM DVD Supermultidrive DVD+/-R/RW
Multimedia speaker :Built in
Keyboard :Built in
Mouse :Built in
Date bought :Early 2006

5)My 2nd laptop PC:
System Type :Branded (Apple Macbook White)
CPU :Intel Centrino Core Duo 1.83GHz
Motherboard :OEM
RAM :2x512MB PC667 DDR2
Casing & PSU :OEM
VGA :Intel GMA950 64MB
Sound :Built in
Harddisk :OEM 1x60GB Laptop HDD
Monitor :OEM 13.3 Inch WXGA LCD TFT
Optical Drive :OEM DVD/CDRW Combo Drive
Multimedia speaker :Built in
Keyboard :Built in
Mouse :Built in
Date bought :Late 2006

6)My 3rd laptop PC:(Laggy)
System Type :Branded (HP Compaq Presario 2100)
CPU :Intel Celeron 2.00GHz
Motherboard :OEM
RAM :1x256MB PC2700 DDR & 1x128MB PC2700 DDR
Casing & PSU :OEM
VGA :ATI Radeon Mobility X300 64MB
Sound :Built in
Harddisk :OEM 1x40GB Laptop HDD
Monitor :OEM 15.4 Inch XGA LCD TFT
Optical Drive :OEM 52x CD-ROM
Multimedia speaker :Built in
Keyboard :Built in
Mouse :Built in
Date bought :Early 2003

This post has been edited by TechnoDude94: Dec 11 2006, 08:21 PM

I also need the prices of the AGP graphics card. Any brand, any chipset, minimum 256MB onboard graphics card memory, minimum 256bits. Must be high-end gaming grade GPU. I want an average size one not a double slot one. Your help will be much appreciated.