That isn't part of Windows 98, as far as I can see. It's Kodak software (Photo CD, I think).
http://support.microsoft.com/kb/140692 notes it came with Scenes 2.0. Does that ring a bell? Or maybe other software you installed? I read it came with Corel Draw also.
If you don't know where you got it from (so you can reinstall the application), all you can do is download it from a reasonably trusted site like:
http://www.5starsupport.com/info/dll.htm
http://www.tedfelix.com/SupaSoft/PCDLib.html
http://www.dynamiclink.nl/htmfiles/rframes/info_dll/info_p/185.htm
Put it in \windows\system and see what happens next.
Hope this helps.
Kees
First I use Windows 98SE, browser Firefox and Yahoo. I'm having problems with downloading and viewing all photos because I did some spring (system)cleaning and inadvertently deleted this file. Now the only way it appears I can find the file is using shady registry scanners, which "promise" to replace missing .dll files. Uh huh. Is there a way to acquire and reinstall the PCDLIB.DLL file Window's needs to run my photo viewer? Any and all assistance is appreciated.

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