text modification

I did some Perl programming for simple text modifications. Mi CNC router reads a list of numbers and moves its motors accordingly (X, Y and Z axes). I need to change some of these numbers. My Perl program does that. But I would like to do the same in Windows (modify a simple text list). How can...

I am trying to modify the attributes of a file (in this case the album title for a group of MP3 files in 1 folder). All I want to do is change one character. W7 (home premium 32bit) blanks out the whole box, and I have to type the all of the text again. Very annoying! XP it lets you...