How can i read dll files so that i can edit them?
DLL, or Dynamic Link Library, files are compiled files. To edit them without the source code, you will need to perform something called “reverse engineering” for which you’ll need SDKs (software development kits), IDE’s (Integrated Development Environment) and other software tools. You’ll also have to be able to read and understand cryptic code. This is not something you can do with just notepad. Also, there may be legal issues involved with reverse engineering (in that it may be strictly forbidden by the license agreement for whatever it is you are attempting to decompile). Modifying a DLL can render the program that uses it completely unusable. If this is a system DLL used by Windows, it can render your system useless (usually until said DLL is replaced with a non-corrupt version).