RetroEdit: reliving the past....

I was busy building a shed today, so I didn't get much done, but I did have a look trough the source of RetroEdit and wasn thinking that it needs cleaned up a bit. I started to write this right back when I was only just starting to use C#, and it shows. I currently use it day-to-day at work so I know a lot more about it, and I can make it much nicer inside. So I may try and clean uo the code before extending it in the near future - like putting editing in for example.....