*Background*: I've got a lot of old photos taken by my first digital camera [Epson PhotoPC 600](http://www.dpreview.com/products/epson/compacts/epson_photopc600) from 1997 and I'd love to make them look as good as possible. I do know they'll **never** look like those from quality modern cameras, but I want to get the best possible results.  

*Problems*:

The pictures are in an 1024x768 resolution (I'd like to get 2048x1536 for viewing on today's screens) and cannot be easily upscaled due to weird, staircase-like (poorly interpolated) edges.

Other problems are:

 * Specific (non high-ISO) noise
 * low dynamic range
 * lower contrast and saturation
 * chromatic aberration
 * and possibly others.


*Question*: What are the recommended operations/steps (and their order) to fix the images in the best possible way?  

*Note*: I'm attaching a few sample cutouts showing the problems mentioned. If you process some of the samples included, please specify what have you done on them (what filters, what software etc.)  
  
![a][1]  
![b][2]  
![c][3]  
![d][4]  
![e][5]  
![f][6]  
![g][7]  
![h][8]


  [1]: https://i.sstatic.net/jFpFr.jpg
  [2]: https://i.sstatic.net/afU1I.jpg
  [3]: https://i.sstatic.net/VECUH.jpg
  [4]: https://i.sstatic.net/WRa03.jpg
  [5]: https://i.sstatic.net/TRn2D.jpg
  [6]: https://i.sstatic.net/OYoVR.jpg
  [7]: https://i.sstatic.net/65HWZ.jpg
  [8]: https://i.sstatic.net/SKPYy.jpg