Forslag til upgradering ældre pc´er

Er der har nogle forslag til billige kompatible opgraderinger af følgende maskine ;

Bundkort ;
MS-6167 specifications
CPUs supported AMD Athlon 500MHz and higher
RAM supported PC100 SDRAM DIMMs, 3.3v, maximum 768MB
Form factor ATX (20.9cm x 30.5cm)
Chipset AMD Irongate (Northbridge)
AMD 756 Viper (Southbridge) 
Expansion slots 1 AGP, 1x and 2x, 66/133MHz, 3.3v
5 PCI
2 ISA

Peripheral interfaces 2 serial ports
2 USB (Universal Serial Bus) ports, 2 optional front panel USB connectors
2 IDE (Ultra DMA and ATA/66 support)
Floppy drive (360K, 720K, 1.2M, 1.44M, 2.88M)
Game port
Parallel port (supports SPP/EPP/ECP)
PS/2 keyboard and mouse ports 
BIOS Award (9/30/99) provides Plug & Play and Desktop Management Interface (DMI)
Boot options Up to four can be selected from: floppy, LS/Zip, HDD-0/HDD-1, HDD-3, SCSI, CDROM, LAN, disabled. All devices available in any sequence.
Miscellaneous Slot A
Wake-up on LAN connector
Power saving switch connector
200MHz EV6 system interface (100MHz bus, timed at rising and falling edges of clock)
OHCI USB
APIC
ACPI power management
IrDA module connector

CPU ; 548 MHz  AMD - K7
RAM ; 128 MB SDRAM
Grafikkort ;  Nvidia GeForce256
Harddisk ; 28 Gb

Gerne med præcise angivelser af RAM/CPU typer/priser osv ,
hjælper selvfølgelig med supplerende oplysninger om nødvendigt..
Pc´en bruges hovedsagligt til digitale billeder.Ikke video.
Fryser i vinduerne...flere RAM ???