How to make key generators?

Introduction
Hi there, in this tutorial, I intend to teach you how to make a pretty
simple keygen, of a program called W3Filer 32 V1.1.3.
W3Filer is a pretty good web downloader…
I guess some of you might know the program.
I`ll assume you know:
A. How to use debugger (in this case, SoftIce).
B. How to crack, generally (finding protection routines,patching them,etc…).
C. How to use Disassembler (This knowledge can help).
D. Assembly.
E. How to code in Turbo Pascal ™.

Tools you`ll need:

A. SoftIce 3.00/01 or newer.
B. WD32Asm. (Not a must).
C. The program W3Filer V1.13 (if not provided in this package), can be found in
www.windows95.com I believe.
D. Turbo Pascal (ANY version).

Well, enough blah blah, let’s go cracking…

Run W3Filer 32.
A nag screen pops, and , demands registration (Hmm, this sux ) Now,
We notice this program has some kind of serial number (Mine is 873977046),
Let’s keep the serial in mind, I bet we`ll meet it again while we’re on
the debugger.
Well, now, let’s put your name and a dummy reg code…
set a BP on GetDlgItemTextA, and, press OK.