Hi - when you go to your album on photobucket you see at the top (before you download) that there are now some size options you will need to set, perhaps yours are currently set too small, use the arrow to open the sizes and choose another larger size.
I hope this works for you - you will also have to download the pictures again to enable them to be the right size and post them all over again on your post.
Edit your post on DCC and highlight the picture img codes, delete and re copy the new img codes.
Good luck
Minnie
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I WAS JUST GONNA SAY, AT TOP OF PAGE THERES A BIT ABOUT THE SIZES,