I know this is old, but here goes it:
It's actually pretty easy. Download and install a memory editor, I used Quick Memory Editor. Trial works fine.
Start up Quick Memory Editor. Start up Freecell. Then add the Freecell task, to the memory editor's watchlist.
a) If you have lost any games at all, go to file > statistics > reset.
b) Now go to file > select game, and type -3, then beat the game.
c) Type the number of wins in memory editor's search field.
Repeat steps B and C, until you end up with 4 fields in the memory editor. (It should take about 4-5 wins) One field is for wins, one is for loses, one is for longest streak, and the last is for current streak. Which is why it's important to reset your statistics, to properly get all 4 fields. Now just double click each memory field, and set the new number to 99, or whatever you want. Then Repeat step B one more time, to force Freecell to save the values. Now close Freecell and the memory editor, and start Freecell up again. Win a game to verify it worked.
Now you can make it look like you definately have no life other than Freecell. 
@eddwo; afaik game #11982 is impossible. But that's the only impossible game you might come across, without selecting a game.