1. go to http://bf-league.eu
2. on the menu select - Downloads and click on- Ladder Maps
3. click on tank and infantry mappack
(click on picture)


4. open zip folder and extract the maps in your game folder, path should look like this:
Battlefield 1942\Mods\bf1942\Archives\bf1942\levels
extract the maps there and thats it

And one more thing, if you can, come this sunday at 19:00 on xfire, so that we can practice before match, cheers