Ok, I suppose it is very difficult. I'm not a programmer, just a beginner. But in the same way zipfldr.dll was made, we can make a rarfldr.dll. I think it is possible. There are tons of programs that add right-click functionality without opening the "main aplication" (think of some antivirus that have a "scan for viruses" option and when you click it, it doesn't load the "main" program, instead it just loads a small dialog). I would like to talk with more knowledge, but I can't. I will try to study shell programming and see if it is possible or not.