Help Programming/Coding Hacking Program?

If it was that easy to do, no account would be safe. For all intents and purposes, it's not possible.
Are you talking about brute-force guessing the password? And the game is browser-based? At most you're going to get ~1000 login-attempts per second (?) and a 10 character password (a-z, A-Z, 0-9 = 26 + 26 + 10 == 62 distinct characters, 10 places) has 62^10, or 8.3929937e+17 unique passwords; 8 with 17 0's behind it. That's a lot of password guesses. If the password is 12 characters, it's 62^12, or 3.2262668e+21 unique combinations. To calculate the max time it would take, 62^10 = 8e17, divided by the number of guesses per seconds(assume 1000) would make 8e+17 become 8e+14. 800000000000000 seconds. Or 2.5 years.
Using a 'pre-made password file' will cut down the number of guesses dramatically, but chances are high it won't contain the password.

And "programming in batch script" (which is what you're doing w/ that 'notepad code') won't get you as far as learning a real language.

Either way, you may as well not try it, the person who hacked the account, will, and i repeat this, WILL DO IT AGAIN, you should have had a more secure password and a more secure login (shouldn't have given it out at all) and separate passwords for everything, but in the end, if someone has a powerful enough computer they will get in.
Making something crack a net password is a little difficult, due to most games having a max logins per attempt/allocated time. so if its set at even 50, per hour, you are looking at 670017 years(at most) for a 7? digit password. that's not counting if they just block your ip from accessing the login server(normally happens around the 300 attempts mark) pushing your time up while you change your ip.

Notepad? Don't tell me you're trying to make a password-hacking program with Batch...
Batch is not exactly a programming language, it's just a set of CMD commands. You will not get far with that. Learn a real programming language
like C++ or Visual Basic. I know 7 e.e
Even if you know one, it will still be very hard to make a password-retrieving program. If I was you, I would just deal with it. There is nothing you can do.
Sorry to tell you the bad news D:
--Sinister

Lol, he might mean Notepad++. Notepad can be used to code, just save the file with the proper extension.