Windows Vista Custom File Properties on Custom files

[Wezb]

Hello!

I want to add tags or properties to Custom Extension Files. Like ".txt", ".Cmp" etc...

Windows Help says :

Note : You cannot add or modify the file properties of some types of files. For example, you can add or modify the properties of Microsoft Office documents and Searches, but you can't add or modify the properties of TXT or RTF files.

Is there some trick to do it anyway ? Its crap that these functionality is only limited to Microsoft Office Files, Images etc...

Thank you