Why does Outlook 2000 need outlook Expre

HOE DO I FIX THIS ERROR?
Windows 98 Version 4.10.2222
OUTLOOK executed an invalid instruction in
module at 00de:00ff132e.
Registers:
EAX=00000000 CS=017f EIP=00ff132e EFLGS=00010246
EBX=00ff0b48 SS=0187 ESP=0056f9fc EBP=0056fa38
ECX=00ff0b48 DS=0187 ESI=0056fa2c FS=531f
EDX=00000000 ES=0187 EDI=00ff132c GS=0000
Bytes at CS:EIP:
8e 30 00 00 00 00 d0 0b ff 00 4e 15 00 00 20 00
Stack dump: