Every time I try to run a screensaver I get an error message that says:

The program has performed an illegal operation and will be shut down. If the problem persists, contact the program vendor.
[Insert screensaver name] caused an invalid page fault in
module KERNEL32.DLL at 0187:bff7a125.
Registers:
EAX=00500614 CS=0187 EIP=bff7a125 EFLGS=00010202
EBX=00b57e08 SS=018f ESP=0056f0f8 EBP=0056f138
ECX=00402ab0 DS=018f ESI=00500614 FS=1297
EDX=00100000 ES=018f EDI=006577f4 GS=129e
Bytes at CS:EIP:
8b 03 a8 01 74 25 25 fc ff ff 0f 8b 53 08 03 f8
Stack dump:
0056f138 006577f4 005005a4 00000070 bff7a3a0 00400000 00500614 006577f4 00000000 0040000c 00400000 005005a4 00000000 00000000 00000b57 00000501

System Specs:
Azza KT3-AV KT133
AMD Duron 1800MHz Applebred
Nvidia Geforce FX 5500 (81.98 ForceWare drivers)
512MB SDRAM
40GB 7200RPM IDE HDD

Both DirectDraw and Direct3D are fully functional according to DxDiag.