A few ideas to hang your standard or not-so standard sized Ork posters/prints:

• your local framing store (Chicago locations)
  
  
• DIY and build your own (framesbymail.com, craft stores)
  
  
• Ikea, Target, Dick Blick, Pearl Art stores or other similar stores carry standard sizes of frames like 18" x 24" (except Ikea carries European sizes). For non-standard size posters, have a custom matte cut with the outer dimensions of the frame and the inner dimensions .5"-1" less than the size of the poster).
  
  
• Swiss Clips, available from Dick Blick Art Store and very inexpensive. This requires you to mount the poster first on foamcore or something similar.
  
  
• Ork's personal favorite: hang with binder clips and pushpins or small nails...put 2 clips on top and 2 clips on the bottom, near the corners, use nails or pushpins through the arms of the clips to hang. Target has some slick, small silver binder clips that work well (in the office supply section).
  
  
• Mount the poster on matte board or foamcore and set it on an art shelf or hang with. This method is also handy if you like to cycle the art that you have on display. CB2 wall shelf or picture rails; Ikea wall shelf
  
  
• Poster 'rails': These are aluminum bars that snap on to the top and bottom of the poster and hang with 2 nails or hooks. They are often used for displays, but create a unique look in the home. See an example here.