This might not be in the right section but there were three or four places I could have put it so I dropped it here...

Trying to clean up my system using RegCleaner...my focus right now is on ' File Types '...

there are many file extensions that have no description or say N/a...I've tried to check some of these extentions on the sites below...

http://www.mistupid.com/computers/filetypes.htm
Computer File Types

http://www.cryer.co.uk/filetypes/
List of File Types

http://www.computeruser.com/resource...filetypes.html
High-Tech Dictionary File Types

but many aren't even listed.

Does anyone know what type of extensions I should be looking for that " DO NOT " belong there? Or can provide a list or a site that I can use to identify these items so I can either keep or delete?

A list of 20-40 ' spurious ' file extensions would allow me to at least compare to what's on my system.

Thanks,

Eg