I recommend using a site like photobucket, it's free to use
First: Once in your Photobucket album , select the pictures you want to post by clicking your cursor over the small white box underneath the pics.It'll be to the left of the picture description. Once you click, a checkmark will be placed in the box. Select as many pics as you want to post.

Second: Once all the pics you want are selected, scroll down to the bottom of the page and click on the box that reads "Generate HTML and IMG code". This will open up a page that contains the coding for your thumbs.

Third: On the new page, go the the third box that reads "IMG clickable thumbnails for message boards - recommended" "Copy" the code that is in the box.

Finally: Go to nfljerseyfanparadise When posting a message, "paste" the code you copied within the message box. You now have clickable thumbs.

Note:If you want your clickable thumbs side by side, When you copy the Photobucket code in your message body, find the line that ends with[/URL]. That tag signifies the last coding for an image. Move your cursor to the end of that tag, hit DELETE on your keyboard, and then the space bar.