I unwittingly installed a bit of Adware, which is now gone, but the damage remains. AdAware didn't catch it. Neither did AVG AntiVirus. I uninstalled the program before it did any significant damage, but one annoying problem persists: I can no longer run RegEdit (directly). The program had deleted RegEdit.exe, but I was able to copy it back from the XP cd. When I try to run RegEdit, I get an error: "The application failed to initialize properly (0xc0000005). Click OK to terminate the application." But here's the kicker: if I RENAME Regedit (ex: "xRegedit.exe"), it opens just fine. Every "fix" I've researched online doesn't address this specific problem. I've run "sfc /scannow", did a System Restore, msconfig and HiJack show no suspicious programs running. I suspect some odd permission was changed, but I have no clue what. I ran the "Doug Knox XP Security Console", and "Disable RegEdit" is unchecked. Checking and Unchecking changed nothing. This isn't a catastrophe since I can always just rename the programs that are affected to get them to run, but it is INCREDIBLY annoying. Anyone know a fix (short of a reinstall)? Thx. System: 32bit WinXP Pro with SP2.