Microsoft Platform Builder - Anyone? - Reg: Touch panel calibration

Hi,
I didnt see any forum for WinCE Platform Builder. Thats why i am posting it here.. :-)

I'm working on a Geode based webpad, with Microsoft platform builder 4. My doubts are
regarding touch screen calibration:
In calibrui.cpp, I could see all the functions related to executing the
calibration sequence.
But before that, can you tell me where/how the following can be done:
# How do I configure the number of calibration points required to be tapped
while calibration/recalibration to *four* ?(I need to have 4 cross-hair tap
points while calibrating).
# How/where do I alter the *default* screen co-ordinates (the four corners
of
the touch screen) ?
# How can this be tested on a virtual CEPC emulator (The recalibration is
not working in emulator even after I added the touch component)?

Some observations:
----------------------------
The function TouchPanelSetCalibration(..) (defined in CALIBRAT.C) is called
from TCHMAIN.C, with null parameters (TouchPanelSetCalibration( 0, NULL,
NULL, NULL, NULL );). Is this the reason why the sample calibration is is
not invoked in the emulator? In this function (TouchPanelSetCalibration())
we can see the following condition being checked:
................
if ( cCalibrationPoints == 0 )
{
v_Calibrated = FALSE;
return TRUE;
}
...............
The condition will always fail and the function will return subsequently, as
we saw that the function is invoked with a zero value for cCalibrationPoints
argument in TCHMAIN.C.

Paths:
---------
..\WINCE400\public\common\oak\DRIVERS\TCH_CAL\CALIBRAT.C
..\WINCE400\public\common\oak\DRIVERS\TOUCH\TCHMAIN\TCHMAIN.c

Any information would be of great help.

Thankx in advance,
Dave.