Third part image upload mod?

I am wondering if there is a third party image upload mod similar to's mod for VB,SMF, and phpBB? Basically, I allow subscription members on my forum (SMF) to view and post attachments, "free" members can use the simple image upload mod to embed images. This is kind of a deal breaker for me because without it bandwidth usage is through the roof, and I am afraid that if I make people pay to play so to speak that I will lose a lot of members. Any help would be greatly appreciated.
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