Maximus. It's my video that you saw. I picked up your posting on YouTube and will attempt to explain how I integrated the Michelin 742 map with Memory Map.
Due to Ordnance Survey license restrictions, Memory-Map OS Editions do not include a Calibration feature for self-scanned maps, which is where you have been getting stuck. To achieve your goal you need to install a second installation of the European edition that will support self scanned maps with calibration. In order to do this however, you do need to have a licensed copy of Memory Map installed in the first instance. European users can disregard this workaround.
frinch11 is right to say the the Michelin 742 map does not have grid lines to aid calibration, so what you have to do is use 'known landmarks' instead. This is not has tricky as it sounds with a little help from Google Earth.
Bertrand also makes a valuable point, that the Olaf topo map on a Garmin unit is a tried and tested way forward. The great thing about Olaf is the level of detail, as it is based on GPS tracks provided by other overlanders. The disadvantage, in my humble opinion, is that to really benefit from this accuracy one has to be zoomed right in on the Garmin, which doesn't really give you a good overview of your journey.
I found that the two systems when used together really complimented each other. Once up and running it was very satisfying to see my GPS position and direction of travel, together with my pre-planned route and earlier tracks, clearly overlaid on the 742 sheet map. The Garmin 276c served as GPS for both systems yet each could be operated independently of each other.
It goes without saying that a standalone Garmin unit loaded with the Olaf topo map is a perfect Morocco solution for bikers. However even the most tech savvy of our two wheeled friends would struggle to ride a bike, use a garmin and simultaneously operate a car PC or laptop without serious risk of disaster. That's not to say that it should be attempted on four wheels, but as the video shows it is perfectly feasible.
So here's what you want to know. If it doesn't work out, I'll try my best to help.
1. Install a registered copy of Memory Map, using a valid User ID, serial number and license key.
2. Download and install Memory Map European Edition from http://www.memory-map.co.uk/dl_mm_OS_V5.htm
3. Copy your scanned map to your hard drive. Avoid using the default C:\Maps_v5 directory as this will cause a conflict with your OS edition. Rather than create a sub-directory I found it necessary create an entirely separate directory to the default. e.g. C:\Maps_Maroc
4. Open Memory Map European Edition and select the Map icon (or Ctrl +M). Then select 'Refresh Map List' and then choose 'Add Folder' to select your Morocco Map directory.
5. By now you will be able to view your Morocco Map. Next is is the fun part - configuring the calibration options.
6. From the file menu select Map > Edit Map Properties and add the name of your map together with any other relevant data. Importantly, tick the 'Allow Calibration' check-box. Click the OK button to save your settings.
7. Next it is time to add calibration points. Rather than explain the whole process here just look up 'Scan Maps' in Memory Maps help index (European edition).
8. Once finished, close the various dialog boxes and close the program.
8. Make backup copy of your C:\Maps_Maroc directory. Extra configuration files will have been created by Memory Map and you'll thank yourself later if you have to do it all again for some reason.
9. That should be it. Enjoy
If you are using a Garmin GPS receiver just hook it up to your PC with a USB cable and away you go. Garmin device, Mapsource, nRoute and Memory Map - all working together like a treat.
--- Using Google Earth to identify calibration points of known landmarks. ---
1. Open Google Earth and from the file menu select, Tools > Options. Find the 'Show Lat/Long' settings and change the default value to Degrees, Decimal Minutes. This will get GE talking the same language as MM and also Garmin GPS units.
2. Zoom in to the Morocco area in Google Earth and select a minimum of three exact points which you can identify on your scanned map. These points should be quite far apart form each other, for example at or near the four corners of your map. The obvious things to choose would be a large towns, but you'll get much better accuracy choosing really specific sites such as road junctions, coastal headlands and tiny villages. Although Memory Map recommends a minimum of three points of calibration, it really is a case of the more the better. I used about 25.
3. Note the Lat/Long of each location and enter these into MM as per the help file instructions. In GE you can get the Lat/Long by looking at the status bar as you move the mouse around. A better and more precise method is to add a placemark (map pin icon) at each location and for future reference save these points to a folder within 'My Places'