Here are some screen captures to use imgur...very similar to photobucket except instead of copying the 'IMG" link you copy the "BBCode" link.
Create an account and login in, click on the drop down arrow and select images
Then click on add images:
Then go to wherever you keep your pictures on your computer...
.I made a motorcycle on my desktop so it's easy to find:
It seems to upload MUCH quicker than photobucket, then you can see it in your library and click on it.
Then click "copy" by the BBCode for forums link
This is similar to the IMG link you copied in photobucket...see next pic
Then go paste it into the forum like you did for photobucket.
imgur seems to offer unlimited storage....one warning, if you click on a picture to "enlarge" to go to imgur web site and there is advertising
I'm not sure if these are too big....the last one was 67kb?