Will the server accept this?

I'm on a dialup connection, so I was thinking about connecting to the library's wireless connection w/ my laptop and leaving my laptop with the librarian for the afternoon. Would I be able to use download accelerator plus to download all the roms at one time or somehow get them to download 1 by 1 without user interaction to download the next one? Thanks.

no, we don't allow that; you have to download each one individually. It can't be automated because DAP won't send the correct session/referrer info.