This is specifically made for the 5.0 forum.
Ok lets start things off... you want to post a picture...please follow the purple/blue arrows!

Start by going to www.photobucket.com (http://www.photobucket.com)
http://img150.imageshack.us/img150/7669/image11gu0.jpg

On their main page you will see a "JOIN NOW" button. Click it and register on the site.

http://img260.imageshack.us/img260/2588/image12tt7.jpg

Once you are a member you will enter your album and you will see this screen.
Click browse to bring up a local directory and find your image file.

http://img88.imageshack.us/img88/5872/image13sl6.jpg

Once you have found the file you wish to load, click it
Now press the "open" botton, shown by the second arrow.

http://img223.imageshack.us/img223/9038/image14ls4.jpg

once you have selected your file and hit open you can name the file, or just upload it.

http://img88.imageshack.us/img88/7963/image15ak1.jpg

Click the "URL LINK" and copy the text. This is the direct link to your image.

http://img175.imageshack.us/img175/8573/image16ed5.jpg

Now, back on Mustangforums.com you will see the "add image" button located at the top of the reply area. click it.

http://img175.imageshack.us/img175/6226/image17od3.jpg

paste the link into the window. you can do this by clicking the text area and hitting Ctrl + V

http://img99.imageshack.us/img99/9119/image18oq1.jpg

Press ok and the image will show in your reply window. You can add as many images as you wish... keep them semi-small for those who have limited bandwidth. Also hit the space bar between pics so they will be added one under another instead of across the page!!

When you are done, simply post as normal, and your images will show in your reply/post!