Denise,
Once you are logged in, go to the top left of the screen and click on "British Ordnance Collectors Network". That will bring up a number of topics on the left. Go down the list and click on "Identification". On the top left is an orange box that says "Post New Thread", click on that. Type in a title like "ID help wanted", type some info in the box that talks about what you know about your items, then click on the "Go Advanced" box on bottom right. Follow down to the left and click on "Manage attachments" That will bring up a new window, and in the top right click on "Add Files", then click on "basic uploader". That will bring up a box that says "Browse". Click on that and search through the directory on your computer till you find the filename of the photo you want to attach and double click on the filename. It will load the photo into BOCN. Max file size for Jpegs is less than 100Kb, so it will compress larger files if they aren't too large to handle. Repeat in browse box for more photos. When finished loading photos, click on "Submit reply" on the bottom right.