Multiple textures on one object

i am making a building and i need to add a brick and conrete image texture to it, both of which i already have. and read that i was supposed to make separate vertex groups and materials but i have no idea how to select different ones so please give me a step by step tutorial on how to add multiple textures to one object on different faces! :smiley:

Multiple materials on on object
http://wiki.blender.org/index.php/Doc:Manual/Materials/Multiple_Materials
http://feeblemind.tuxfamily.org/dotclear/index.php/2004/12/21/5-blender-indices-materiau—material-indice

Richard