I want to know that too

Tiy said he'd do a writeup on it, but basically, unc0rr added capability for engine to read its data directly, without using socket.
Since I wanted to be able to add arbitrary options, I made the syntax more complicated than initially by him by adding back in all the usual variables (sorry)
Essentially, you just setup your call to hwengine (say in windows program list or when specifying program to open in firefox) like so:

/path/to/hwengine /path/to/hedgewars/Data %1 1280 960 32 0 1 en.txt 128 20 0 1 1 0

In this particular case, the parameters are:
1) path to Data so hwengine can load maps and such
2) %1 - the full path to the hwd/hws you are trying to open - if in Firefox, you'd use %1 and it'd pass in the temp directory3) horizontal resolution
4) vertical resolution
5) colour depth
6) fullscreen - 0 no, 1 yes
7) sound - 0 no, 1 yes
8) locale file, in this case en.txt
9) volume - 128 is 100%
10) timer interval - is related to frames per second
11) show FPS - 0 no, 1 yes
12) show alt damage tags - 0 no, 1 yes
13) enable music - 0 no, 1 yes
14) reduce quality - 0 no, 1 yes

Usually I generate these just by launching a game with parameters I like, then using a normal hwengine commandline:
For example:
$ ps auwx | grep hwengine
nemo 8271 41.7 2.6 214184 82732 pts/14 SLl+ 13:46 0:03 /home/nemo/games/bin/hwengine /home/nemo/.hedgewars 1280 960 32 50838 0 1 en.txt 128 20 /home/nemo/games/hedgewars/Data 0 1 bmVtbw== 1 0

In this case, the parameters are:
[/home/nemo/.hedgewars] [1280] [960] [32] [50838 - REMOVE] [0] [1] [en.txt] [128] [20] [/home/nemo/games/hedgewars/Data - MOVE TO FRONT] [0] [1] [bmVtbw== - REMOVE] [1] [0]
Which results in:
/home/nemo/games/hedgewars/Data 1280 960 32 0 1 en.txt 128 20 0 1 1 0

Then I just add %1 as 2nd parameter and done

I suppose a wrapper could be made to read the config file to make this easier.

I say you definetly don't know the meaning of the word group "user fiendly". For all this cr*p I'd better run HW and play the demo from there.

You only do it once though. Seemed pretty straightforward to *me*.
But. Tell ya what.
If you tell me what the standard install locations are under windows, and what your preferences are for sound and such, I'll give you a string to copy and paste into the firefox
"open with application" box.

Nah, I can do that following your instructions. What I'm saying is it's too much

@Nemo:
Ty for the answer.
My Install folders:
hw engine:
C:/Programme/hedgewars 0.9.10/bin/hwengine.exe
de locale:
C:/Programme/hedgewars 0.9.10/hedgewars/Data/Locale/de.txt
music:
C:/Programme/hedgewars 0.9.10/hedgewars/Data/Music
sound:
C:/Programme/hedgewars 0.9.10/hedgewars/Data/Sounds
demos:
C:/Dokumente und Einstellungen/Mkk-Bote/.hedgewars/demos
saves:
C:/Dokumente und Einstellungen/Mkk-Bote/.hedgewars/saves

Edit:
Settings can be like your 1st post, only de.txt and path I posted.
Is this enough?

"C:/Programme/hedgewars 0.9.10/bin/hwengine.exe" "C:/Programme/hedgewars 0.9.10/hedgewars/Data" %1 1280 960 32 0 1 de.txt 128 20 0 1 1 0

Try pasting that into the "open with" dialog then...

of course the file you open will have to be a 0.9.10 one.

If 1280x960 is too large or does not work with your SDL, try your normal resolution I guess.

Nah I just installed Ubuntu (not on a virtual machine) and I rule

hm i noticed that most of this changed with 0.9.11
here is the correct guide: http://www.hedgewars.org/node/1465

bye
Koda

is it easy to implement a record demo feature so it leaves a .avi , .flv file or something, for easy making of youtube videos and such?

no, it doesn't seem easy

It's rather easy to write AVI files using OpenCV (did it two or three weeks ago). However it would increase the number of hedgewar's dependencies etc. unless it's possible to do dynamic bindings that don't require some specific dll unless called ... might have to try that.