Hiya

Its easy, when you use the create thread or advanced reply, just a little under the text box is a button called "Manage Attachments" click that then 5 browse boxes will appear, you can use these to navigate to the files you want to upload; then you will need to click the upload button and wait while the data is transfered ZZZZ. Then when it say close this window just check the main window to see if the files are there and bingo

click the submit and close the upload window

Sit back and watch the rep come in
Oh the preview post doesnt show the pics by the way (why?) just submitt and they will be there