Paul you use the Advanced Post option and look for the Manage Attachments button below the left corner of the text box. Then you click on Browse Attachments for each picture. They'll have to be in your hard drive and you may need to navigate to what file system has them stored such as Downloads, My Documents, or Pictures. You'll need to maximize the Browse Attachments screen so you can see all the buttons. Once you've loaded all the pictures then hit Upload and wait for them to load onto the forum then Close This Window in the upper left corner. Only certain formats are allowed but it lists which ones. Jpeg is the most common for pictures. The first few times I found it helpful to open a second router forums so that I could go back and forth between the instructions and the other screens.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.