Below are some batch files that I have found pretty helpful in this hobby. If you don't find them useful, or they don't work for you well.. disregard.
7zip-
All of those files that you want to 7zip. Place the 7z.bat file in the directory with the files you want to 7zip and execute. If you have 7zip installed, it should run through and 7zip everything nicely. Nothing will be deleted just in case. You will have an archive and the original.
.nib conversion-
Because all of those c64 .nib files want to be .g64. You will have to edit this file a little based on the location of nibconv.exe. For example min is in "p:\nibtools\nibconv.exe". Simply change that bit of text and place nibconv.bat in the directory with all of your .nib files and execute. Nothing will be deleted just in case. You will have .g64 and the original .nib.
makemess and makemame-
Both of these are used to shorten the crap you have to type to start compiling mess64 and mame64. This is an update to the compile_extras.zip available from Mr. Do. If you haven't been to Mr. Do's arcade and read the link on applying .diff's and compiling mame, here it is:
http://mrdo.mameworld.info/compile.phpFollow those instructions and use these .bat files instead. Worked for me.