that is a nice simple write up. There are two things you can do to your toucam.
1. load macros into the toucam (both 840k & 900nc) to allow for raw colour mode and also optimized colour.
2. convert your 840k into a 900nc, by loading the 900nc binaries into the 840k
Both processes use wcrmac to load the macros or binaries.
Basically you want to
1. copy the 900nc binaries into the directory as stated in your link. This is for converting the 840k into a 900nc
2. unzip the macros (
http://astrosurf.com/astrobond/BERaw.zip) into the
C:\Progam_Files\TWIRG\WcRmac\macros Or in the path where you installes WcRmac
. This is for allowing either 840k or 900nc to work in raw modes
3. plug your camera in
4. fire up your capture program ie k3ccd or qfocus etc
5. fire up wrcmac
6. BACKUP YOUR CURRENT binaries as per your link above
7-1. Load the binaries if you want to convert the 840k into a 900nc OR/
7-2. Choose the mode you want to work in ie optimised colour or raw colour mode
When changing to optimized colour mode etc, it is important to load the macro / mode and then choose frame rate (maximimum of 5fps for colour raw mode) and then press "restore default settings". you can then play with saturation etc from there!
Hope this helps