Go to photobucket and you want to go to the upload page,when I log in it is automatically on that page so you might be as well. make sure your on the (images from your pc tab) you should see 3 empty rows with buttons to the right that say browse, you want to click the browse button, this will open up folders on your computer, you want to open the folder that has your pics in it.
Once there find the pic you want and just double click on it and it will put a tiny pic next to the bar on PB and say add titile in the bar(if you want t not necessary).
Then there should be a big upload button beneath the three rows, click that and it will will begin to download your pic, once done it may go right to your album or just click the my album tab, once there you'll see the uploaded pic and there will be options right on top of it, you want to click resize then click mesage board size and follow directions. Then go back to my album and under the pic there will be an address, Highlight that whole address then right click on it and click copy.
Then come here and you can start a post or add to one then click the image button above the smilies 2nd from left looks like a little portrait, this will put image tags in your post, you want to right click right in the middle of the tags and hit paste, then you can hit preview to see if it works, if it shows up you can just hit the post button and your good to go. Seems like a lot of work but it only takes seconds.
Forgive any typos that was a lot of typing