Booster son pc

Bonjour,
J'aimerais booster mon pc, je voudrais savoir que faut il changer.
Voici ma configuration:
Système d'exploitation Windows XP Professionnel (build 2600) Service Pack 2
Navigateur web par défaut:
Client e-mail par défaut: Microsoft Office Outlook

Carte mère SMBios version 2.2
MICRO-STAR INTERNATIONAL CO., LTD MS-6330V5
Bios: ...... taille: 3008Kb

Chipset Northbridge: VIA KT133A
Southbridge: VIA VT82C686

Processeur AMD Athlon XP Palomino Socket A (462) (@0.18 um) -1 Mhz ( L1I: 64 Ko, L1D: 64
Ko, L2: 256 Ko )

Mémoire Mémoire physique totale: 384 Mo
SDRAM 256 Mo PC133 (133 Mhz) (3.0-3-3-6)
SDRAM Toshiba THMY6416H1EG-80 128 Mo PC125 (125 Mhz) (3.0-3-3-6)

Carte Graphique nVidia Corporation NV44A [GeForce 6200] NV44A [GeForce 6200] (256 Mo)

Péripheriques IDE Maxtor 6Y080L0 YAR41BW0 (ATA, 76.34 Go, tampon: 2 Mo)

Lecteurs CD/DVD CD-ROM F565E 1.07 (CD-ROM)
LITE-ON DVDRW LDW-411S FS02 (DVD+R Recorder)

Disque dur Maxtor 6Y080L0 (76.33Go)

Cartes PCI/AGP Stockage
VIA Technologies, Inc.:VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE:
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE

Réseau
VIA Technologies, Inc.:VT6105/VT6106S [Rhine-III]: DFE-530TX rev C
RaLink:RT2561/RT61 802.11g PCI: EW-7108PCg

Affichage
nVidia Corporation:NV44A [GeForce 6200]: NV44A [GeForce 6200]

Multimedia
VIA Technologies, Inc.:VT82C686 AC97 Audio Controller: MS-6330 Onboard Audio

Ponts
VIA Technologies, Inc.:VT8363/8365 [KT133/KM133]: VT8363/8365 [KT133/KM133]
VIA Technologies, Inc.:VT8363/8365 [KT133/KM133 AGP]: VT8363/8365 [KT133/KM133
AGP]
VIA Technologies, Inc.:VT82C686 [Apollo Super South]: VT82C686/A PCI to ISA
Bridge
VIA Technologies, Inc.:VT82C686 [Apollo Super ACPI]: VT82C686 [Apollo Super
ACPI]

Bus Series
VIA Technologies, Inc.:VT82xxxxx UHCI USB 1.1 Controller: VA-502 Mainboard
VIA Technologies, Inc.:VT82xxxxx UHCI USB 1.1 Controller: VA-502 Mainboard
Vr4181A USB Host or Function Control Unit:USB: Hama USB 2.0 CardBus
Vr4181A USB Host or Function Control Unit:USB: Hama USB 2.0 CardBus
Vr4181A USB Host or Function Control Unit:USB 2.0