I upload all my pics to photobucket.
Then when logged into photobucket, doubleclick on the direct link and it will put the link into the clipboard.
Start a new thread here, and click on the "insert image" button and paste the link there.
By doing it this way, you can link to as many pics as you want and they will be sized larger than having to resize them manually and still only be able to upload 4pics max to the site itself.