This is it, folks.  PK Hack.  The Swiss Army Knife in your EB hacking arsenal.  This guy has it all: Enemy editing, item editing, PSI names, text functions...  not even lame n00bs should be without this.  All hail Tomato and Spaanoft for its creation.

This is PK Hack's main module, from which you can access all functions. This doesn't need a lot of background information, so I'll just let you go at it.
 

Here is a list of button functions for this screen:

The Folders: As with most programs, they're the open and close buttons.

Green Button: IPS creation.  The steps for IPS creation are listed in the N00b's guide.  Bear in mind that the SNESTOOL IPS files are a bit more efficient than those created by PK Hack, but PK Hack's is more convenient for non-DOS users.

Mini-Ghost: It just puts the word "Boo!" in the header.  (The header is the identifying code in your ROM which contains the title; you can probably see it in your emulator when you load the ROM.)

Enemies: Edit the enemies.

Items: Edit the items.

PSI Names: Edit the names of all PSI skills but PSI Favorite Thing.

PSI Teleports: Change the names and target coordinates of your PSI Teleport.

Text: Change phone numbers, ailment names, and command window thingies.