Oracle Installation Error Message

I cleaned the registry and uninstalled Oracle. Now here is the error message I get when I try to install Developer 6 before it aborts.

ORAINST caused a general protection fault
in module DDEML.DLL at 0002:00004c67.
Registers:
EAX=168702a0 CS=1687 EIP=00004c67 EFLGS=00000246
EBX=000202a0 SS=4f27 ESP=00008348 EBP=0000835c
ECX=00d604cc DS=167f ESI=000002a0 FS=11e7
EDX=04cc0000 ES=0000 EDI=00000260 GS=0000
Bytes at CS:EIP:
26 ff 74 04 9a a6 0f b7 17 0b c0 74 1e 8e 46 f6
Stack dump:
026002a0 00000000 00000000 168702a0 0000838a 0635838a 02a01687 11e7018f 0564018f 000004cc 167f0260 00d6e213 021a031c 11e7018f 0000c061 bff70260