film holder

I am looking to digitise my library of film negatives. I have the scanner but do not have the film holders for it. I would be happy to buy film holders plus pay for postage etc.

I just got some film back from the lab, and I'm trying to scan it on my Epson V550. The film is so curled that it is almost impossible to get it to even stay in the holder. What's the story on the focus for these flatbeds? I tried to order something called an "Anti-Newton Ring Glass" for my...