Tonight I spent a good 20 minutes figuring out how to upload an image to my webpage.  After trying "everything" and wasting time I got smart and checked the forums.

From searching the forums (which themselves are worth the paid membership) I discovered what works best...........

1. Use firefox, for some good reason WA works the best with firefox.

2. When editing the webpage clicked the green plus sign. From there go to images tab.

3. The orange arrow that points to filesystem --> hit browse. From there it should pull up your saved pictures on your desktop. 

4. The image must be in jpg or other picture forms. Site Rubix will prompt you if you need to change it. 

5. Open, Save and check out the masterpiece.

 It worked for me that way. I may update my blog if I find an easier way or more steps.