Since like 20 years .NFO files are ASCII files with text in it. They are opened with notepad or a NFO-Reader. On 98% of all Computers were NFO files are used they are opened with notepad. Why is .NFO in Windows 7 assigned with System Informations? That was wrong in Windows XP, in Vista and is still wrong in Windows 7. Fix this bug, .NFO files should be opened with Notepad, like most of users will assign it. Or integrate an own NFOViewer. Also, System Information files shouldn't be called .nfo because its not user friendly.

iSd3d - Actually... Since time immemorial - or so it seems, the .NFO files found in .ZIP and .RAR archives were never associated with Notepad or any other tool - unless you (or an Admin) associated the files in question with notepad or the other NFO tool. .NFO has, since Microsoft created the first System Info tool, also been used for the save files associated with the SysInfo tool. As you pointed out, it's been like that in XP, Vista and (for that matter) all previous versions of Windows that had MS Office installed. So it can hardly be called a "bug" - more like more than one group deciding that the .NFO extension should be used with their tool. Both groups - Microsoft and whoever came up with NFO files - have an equally valid claim. If you don't want NFO files opened with System Information, then you're still free to set the association with Notepad or some other NFO reader.For what it's worth - Windows has already come with it's own perfectly good NFOViewer - it's called Notepad. There's nothing special about .NFO files as they're nothing more than plain text files. Some might be better viewed with a DOS type font like Terminal but beyond some of the cute ASCII text in them, there's really nothing out of the ordinary that would require a special program. As far as .NFO not being "user friendly" when associated with System iNFOrmation files - it seems like a no brainer.

Wolfie2k6 is absolutely correct. I've always had to associate them to notepad manually.

I can't stay out of Wikipedia tonight... http://en.wikipedia.org/wiki/.nfoFrom the article: NFO files were used back in the day and still float around in niche applications. Besides associating Notepad as Wolfie2k6 mentioned (with a terminal font) WinRAR has a reader.Also, .doc used to be atext and WordPerfectextension (again from Wikipedia).

PNutts - WinZip also has an internal reader.