'...ahh fick I don't want to crack games I want to crack somethingworth while...'.  
If this is your attitude just wait one second, you may not want to spend hours playing 
X-Wing (although I did, 'thats General Kottos to you rookies') but you will have to start 
somewhere and as you will come to find out, the principles you learn here can be applied to 
other applications.
If you have played this game you will already know that upon loading
the game you will first arrive at the registration desk where
you will be prompted for a certain word that is located somewhere in the 
manual.  You can if you wish get the manual and write down all the words
that it asks you for (there is only 20 or so) but this takes time, and
isn't really a crack.

So what do you do? Well, as the program knows the answer the words
must be kept somewhere on file.  This is where your hex editor comes into play.
What I did all those years back was to search through the files in the 
XWing directory for the string 'DANTOOINE' (I think this is one of the 
codes I can't really remember and I don't have the program anymore).
And sure enough in one of the '.ovl' (front.ovl I think) files I located 
the string. 

At the time I was using XTGold as my Hex editor which can search through
the ASCII Dump, but you may only have an Hex Editor that can only search 
through the actual HEX code you may want to click here if you
don't know how to convert HEX to ASCII.

So after you have located your strings you simply type over them with your name or 
spaces or whatever, being careful not to go beyond the length of the longest string and 
save to disk. (Back the file up first if your not entirely sure what you are doing.)

Now when you load up the game simply type in your string and your in, BINGO!

This same approach can be applied to the games sequal TIE Fighter and any number of other
oldish games.