Bob,
I recommend fixing one problem before installing and moving on to something else. The errors can become compounded and troubleshooting is difficult.
It's always a good idea to UNINSTALL the previous antivirus program before installing something new. Did you do that? If not, then I recommend uninstalling ALL of the antivirus programs before attempting to reinstall a new one. AFter the uninstall of all programs, download a run the McAfee Stinger tool from the link below. Although it won't find every type of virus, it will find most of the worst and will clean things up:
McAfee Stinger Download Link
Read the link below for an article about your error message and a possible fix:
Error Message: The Comdlg32.dll File Cannot Start
Hope this helps.
Grif
The background
Running xp Home edition with sp1
Only anti virus was Mcafee online virus scan that came with the Dell machine.
The problem
Last month I downloaded pestpatrol trial from a link on Dell home page. When that expired I suddenly had a prob with a browser hijacker.
I tried to down load a trial from Mcafee and it seemed to load Ok except when I tried to run it. I got message "some components of Active shield are missing... Please reinstall" I did! Multiple times! Same thing!
I did finally download a cw shredder to cd from another machine that took care of the hijacker. At least I think so! Then other things happened.
I tried to update to sp 2, download froze on last mb.
Tried to download ad-ware..seemed to down load but wouldn`t run. Same with trial from Norton! When I tried to use printer I got message that I didn`t have Admin priviliges.
Now the computer stops at start up giving me message
"Winlogon.exe-unable to locate componet Application failed to start because Comdlg32.dll was not found"
Now what?

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