On Visual Studio.NET (I love it! I recommend it to anybody; infact - I'll sell it to anyone who wants it; just PM me) you can open .exe files and take them apart - the Strings, the Binary, the Icons, the Cursers (I have ripped apart the No One Lives Forever exe) and you can edit the code itself.
What Program are you using to do it?
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.