Mike,
When a user uploads a file, I immediately copy it to a folder with that user's ID and log it into a tps database that contains the real filename as specified by the user, and the new filename because I rename each file with a sequential number. As part of the upload process I reduce the size of the photo to display on the screen and I create rhe thumbnails at the same time..
A user can view the thumbnails and see the original filename in a browse procedure, and delete or view the file if desired. On the record delete, I look up the actual name of the file and delete it and the thumbnail from the folder, then remove the log entry that contains the relationship between the name the user knows and the name that I have given it.
There is no simple form entry to delete a picture, nor do I believe should there be. You could set up a text window and then use the text returned to delete the file, but that sounds like it could be a bit dangerous.
Cheers!
Rob