Mac users, I need help with iMovie '09?

So awhile back I deleted a project that was a music video I had made. I still have it as a project in the imovie folder on the computer, but not on imovie. I deleted the "project" off iMovie awhile back and I wanted to put it back on there but I don't know how. I can't "undo" because it was awhile back. I want to export it as an HD movie just so I'll have it because there is nothing that let's me use it (such as quicktime) because it's not a finalized movie. I try to reopen it in iMovie (since that's the only place it says I can) but when I click it, nothing pops up in iMovie. does anybody know what I can do to get it back on there? Thanks :) I'll pick best answer asap.