i use post-its & regular tape. LOL. i'm currently laying my poster on the floor so the edges get straight.
i'm not too hell-bent over the background. it sure beats the...boring black background for the Tokyo/Osaka Dome ones. hahaha. i'm glad the Summer Con got better group/member goods.
awww Lisa, i feel for you.
maybe you can go to Kinko's & enlarge a photo to a poster-size, LOL. idk if you have Kinko's in NY though.