Conference noted::bicycle

    Well the problem is corrosion that has caused the two pieces to weld
    themselves together.
    
    A technique that might work is to take the wheel off, invert the bike,
    resting the top tube on something firm.  Find something strong, thin
    and long enough to go in to the hole on the bottom side of the steering
    tube (the bolt might work), take your hammer and give it a couple of
    hits.  This may loosen it so that you can remove it.  You may also have
    to remove the brake before doing this.  When you go to put the new one
    in grease it first, this will reduce the probability of corrosion in
    the future.
    
    Rich

    Give the liquid wrench some time to work before you get crazy. 
    Sometimes even a couple of day, soaking it good every now and then, is
    needed for it work the corrsion loose.  If your bike is steel and your
    stem is aluminum temperature changes might help.  Try to get the frame
    warm and the stem cold (ice bag and a torch?).   Good luck.
    
    Earl

    I had a similar problem with my crank set a few years ago.  To apply
    heat I poured boiling water over the crank arm and that did the trick.
    It's worth a try, and it won't harm your bike.
    
    Regards,
    Phil

Might try removing the brake, clamping the fork crown 'twixt a couple blocks of 
wood and try to rotate the HB's. Avoid putting too much stress on the forks,
especially don't try & twist via the fork blades. If you haven't already,
invert the bike and squirt Liq. Wrench in from the bottom too, and give
it plenty of time to work. As another possibility, by inverting the bike you 
may be able to re-connect the stem's lost wedge, too, and a few cycles of
tighten/loosen on that may assist the process. Be careful when using
the BFH, as you can cause a fair amount of damage to things like headsets,
head tube, top tube, etc. if they aren't supported well....
                                 G'luck!
                                 ken

    	Don't laugh at this, but what you need for a frozen/corroded stem
    is a vinegar bath! Invert the bike and fill the head tube with vinegar.
    Wait a day or so, and it should just twist out. 
    	What you've got is galvanic action corrosion between the aluminum
    stem and the steel steerer tube that comes up from the fork. You want
    to attack this with a mild acid, not a lubricant like liquid wrench.
    Vinegar does the trick.  - Chris

    I will give each of the suggestions a try, starting with the last one,
    vinegar (I guess I should get something cheap rather than use my SO's
    Balsamic, herbal vinegar). The stem is aluminum and the tube is steel.
    
    If that doesn't work I'll try the liquid wrench from the bottom...
    
    Thanks for the suggestions, I'll let you know what happens...
    
    	Marty

    Well, it's over a year later and the stem is still firmly attached to
    the fork. I tried longer periods of liquid wrench (from both the bottom
    and the top). I tried the vinegar, which resulted in large amounts of
    rust colored vinegar to leak all over the floor :-). I tried all sorts
    of variations of holding the fork crown and twisting, banging on
    various bits. I even tried the old Coca-cola trick (maybe I should try
    the various types of Coke...).
    
    In the mean time I bought a relatively inexpensive ATB, which doesn't
    ride as nicely as the Vita Sprint, but it does have neato index
    shifting and I don't have to worry as much about road hazards as I did
    with the road bike.
    
    When I get more serious about riding, I'll take the bike into a shop
    and let them try, maybe they'll have better luck...
    
    	Marty

    Marty,
      I don't know if is too late (or where you live) but I use a 
    product called Break-Free CLP (it is product most often used by
    shooters) that might do the trick.  I guy in our group had the
    same problem and this worked.  You should be able to find it
    at most gun stores (or sporting good stores that cater to shooters).
    It comes in both spray and liquid form.  If you live or work in the
    Maynard area there are a few places around that carry it.
    
    Quinn

    I give it a try. My cheapy ATB isn't nearly as nice as my old bike. It
    certainly can't hurt...
    
    Thanks.
    
    	Marty

    Let it sit for a couple of hours.....
    
    Quinn