I use a site that supposedly contains all of the file types known in the world. http://www.ace.net.nz/tech/TechFileFormat.html I have used this as a reference to help others do what you are doing. I rarely get feedback once they have the info but I hope this helps. ------------------------------------------------- Mitch Rerek Senior Information Technology Consultant West Virginia University [log in to unmask] ------------------------------------------------- >>> [log in to unmask] 09/18/02 2:56:21 PM >>> Hi all- I am feeling rather foolish, but I have no idea how to go about getting this information independently, because I don't even know what the thing I am looking for is called. I am trying to allow specific attachments through on certain lists, and I found the documentation for how to do that. I think I have done this correctly: attachments= yes,image/gif,application/*msword Assuming that is true, and I have done this bit correctly (it seems to work), the thing I need help with is this. Where is a reference so that I can determine the correct nomenclature for defining the file types? It was sheer luck that these were in the examples in the L-Soft documentation, but if I want to allow/disallow a variety of other file types, I am not sure where I can find the precise terminology. Can anyone point me to a resource that defines the correct naming conventions? TIA! Shannon :-) ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Shannon Ahern DevelopMentor WebMistress 310-543-1716 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ There are 10 types of people in the world: Those who understand binary, and those who don't.