Digital BW, The Print

I am having trouble setting up and calibrating HDR. Ian provided us 
with wonderful tutorials but I'm still not out of the woods and i 
thought I could post here, even though it's not strictly for black & 
white only.

Background info:
 
Photoshop 7
Adobe RGB(1998) space
Windows 98SE
Sprintscan 120 (& latest firmware) and all film holders including the 
Glass holder.
Silverfast Ai 6 & HDR 6
Polaroid Insight 5.5
 
I have used Ai to scan in 8(SF calls 36->24) & 16 (SF calls 48) bit 
col, using the CMS settings in the gif screenshots (2 for Ai and 2 
for HDR  at http://pacman.vosn.net/~fgross/miscellaneous/). I believe 
that I have this setup correctly - right ?
 
I used the C-ROES slide to do the IT-8 Calibration in Ai according to 
Ian's tutorial.
 
Now here is where the problem originated - I found (after many 
communications from Lasersoft) that the Glass carrier is not 
supported by Silverfast and does NOT focus the scanner. So their 
suggestion, which I have followed, was to use Polaroid's Insight to 
scan and save the file as a 16 bit RAW file in TIF format. So far so 
good..... (The following would of course also be applicable if a RAW 
scan were done in SF Ai or any other scanner/software package).
 
Now, I can either open this saved RAW 16 bit directly into Photoshop 
or, again at Lasersoft's suggestion, I have purchased HDR for this 
purpose. In HDR I go to the Open button and browse to where the 16 
bit RAW file was saved and Open it giving me the Silverfast controls 
that I like ( the histogram sliders to set the end points, the col 
cast removal etc.).
 
But, my difficulties are:
IT-8 Calibration for HDR - should I scan this slide in SF Ai and the 
supported slide film holder and scan it as 16 bit (SF calls 48 bit 
HDR Colour).  Save it to disc to open in HDR. In HDR select select 
Frame>Image Mode> 48 bit Colour ? Then Open button?
 
(Before doing this RAW  IT-8 target scan - go into the Ai Options>CMS 
settings and turn everything to OFF/to NONE.)

Then...what....press the IT-8 button & browse to the it-8 reference 
file as i did before in Ai ?
 
Although it'd usually be kept UN-Checked I must now, for this IT-8 
Calibration purpose only, have the "for HDR output box" Checked - 
right ?
And then, in HDR fill in the "Gamma in HDR data" box with 2.2 (my Ai 
Gamma setting) - right ? But this should normally have 1 inserted to 
balance the original Ai gamma setting ?
 
The HDR>Options>General & CMS screenshots are shown in the url 
http://pacman.vosn.net/~fgross/miscellaneous/.

The CMS>Scanner>Internal does not allow Calibration to be chosen  - 
it is greyed out
 
Any help appreciated - feel free to email me directly

hope my confusion is clear <g>
Frank