Linking to Photobucket pictures.
Once you've got your pictures uploaded to photobucket, click the "Library" button to display your pics. Mouse over the picture you want to link to and a star shape will appear in the upper right corner. Mouse over the star and a menu will pop up. Click "Get Links" and another menu will pop up. Click the field beneath "IMG Codes" and it will briefly flash "Copied".
Now come back to your Skoolie message and right-click/paste the link within the message where you want the picture to appear. To verify that the link is working, scroll down to the bottom of the message window and click the "Preview" button. If the message looks good, click "Submit" and you're done.