The $VER: statement that Paul mentioned is right in the middle of your picture. It looks like you've got some other stuff going on above that, however? You'd probably want to put the ACAtune command all the way at the top, before your CardReset patch and wireless drivers (and whatever else you've got going on there) kick in.
Not trying to be a smart-ass but you may want to post a better picture, for clarity sake. Here's how to take a photo of a screen. I did this with my cheapo camera phone, or you can use a screenshot capture utility (no special camera required).
You can use the "Manage attachments" button to attach it to to post, rather than having to embed it.
In other words, if your startup-sequence were mine, you'd probably want to put the command directly below those first two lines. The ; (semicolon) at the start of them means they're commented out. Or you might want to put it after all of the 3.9 ROM updates. That's a question for Paul. If your startup-sequence looks anything like mine, that is. :confused: