Problem showing characters in my site after modified files in a Windows IDE

I have started working with an PHP file, which is running on Linux. I have connected the site for development using Netbeans from my windows vista computer.

It seems like when I save any file and upoload them to the server, and this files are php includes for the whole site, the site loose some configuration respect the Character Set, and starts showing wrong characters everywhere, even in the pages that I开发者_JAVA技巧 have not modified. However those pages are including the page that I have modified.

Do someone know why this can happen? and what is the best way to avoid this problem?

And hoy do you guy know what is the actual Character Set of a project if you are starting to work with it, and is a old project? I am using netbeans from my windows vista.