DISCLAIMER! If you should do this the same way I did, be sure to TRIPLE CHECK that you are not drilling through the exterior of the body. That would be a bummer.
I went to CTF/Brafasco and bought a bunch of 3/16"x2" eye hooks with finishing washers. I also bought the 3/16" tap and appropriate drill bit. To get through the interior trim a 1/4" drill bit is handy. For the curtain wire I used that elastic curtain wire stuff you can get from wal mart or crappy tire.
My interior had all the plastic covers from where the original curtain rails were, so I tried to use the same holes if I could. There were a couple spots where I had to re-drill so I just used a couple of left over covers to pop in the holes.
Step one, pick where you want your eye hooks and mark them out. I have three on the top and bottom on the sides and two on the top and bottom on the rear.
IMG_4933 by TheMacrobius, on Flickr
Step two, Drill out the interior trim with the 1/4" bit. Use a small drill bit as a feeler to see how far away the metal bodywork inside is. Use your discretion to decide whether it's appropriate to drill a hole in it or not. Once you've drilled a hole in the metal, gently insert the tap and carefully turn it until it catches. You're tapping very thin metal here so it's easy to strip. Just take your time and don't turn it too fast.
Step three, Thread your eye hook in with a finishing washer into the tapped hole and tighten until it's just snug against the interior trim.
IMG_4938 by TheMacrobius, on Flickr
IMG_4937 by TheMacrobius, on Flickr
Step four, Install curtain wire and curtains!!
IMG_5039 by TheMacrobius, on Flickr
IMG_5031 by TheMacrobius, on Flickr
For behind the chairs I just tucked the curtain into the trim. I haven't quite figured out how to keep that one up there.
IMG_5040 by TheMacrobius, on Flickr
The curtains are made from a sweet hippy sheet I found here at Kensington Market with a sewing machine I bought for $20.
Congratulations! Time for a beer!
IMG_4936 by TheMacrobius, on Flickr
