connect the fone, run that file manager eg p2ktools, on c/mobile/skins create a new folder under skins, name it with skin u want to instal, copy all the .ski filer n the .dat files to that folder then restart ur fone.

is it possible for motorola l7 .?

yes it is and its esier with p2k commander, jst port the downloaded skin into skinner4moto then save it without editing it, open the folder where u stored the skin u will c files eg man1.dat man.ski ect note the two files named install skin.p2kc and unistall skin.p2kc. open the install one with notepad and edit the drive from a/mobile/skins to c/mobile/skins etc. then save and double click on it n the skin will be installed easy.