First of all, read all the instructions that were sent to you by the abstract acceptance committee. A poster session This article deals with how to make your own 35mm slides. If you are speaking to a large audience, a slide presentation is a good choice. How much this costs depends on how much of your own time you can devote to the project, and how long a lead time you have before the meeting. You hand them the data and they make the slides usually using their standard-format system.
Timing makes a big difference.
Programs that you can use for the PC are Microsoft PowerPoint, Persuasion, Harvard Graphics, Adobe Pagemaker, Adobe Photoshop, Corel Presentation, or Lotus Freelance Graphics. There are many other programs that also will work well, but the ones mentioned here are the most commonly used. Similar programs are also available for the Macintosh. The use of a shared departmental or institutional film printer for making 35mm slides involves the least cost. There are several film printers that translate electronic data into images, which are then developed just as though they had been shot with a camera.