Customize mediaxxxscript

I'm planning on moving my current site [login to view URL] to "mediaxxscript" script. I would need some minor tweaking to adjust the urls to match the current urls I've been using on my site so the transition would be as smooth as possible and prevent outages. Also would be needing to create a linking codes generator as I have now on my script (direct link, forum thumbs, html code, etc), so visitors can easily link to the images they upload. Lastly I need to migrate all my content to the new script, I guess a simple mysql routine could do the trick, that could match the fields on both DBs. Please, only bid if you already have experience dealing with mediaxxscript.