psadmin is part if PS7 and JES2005Q4 on windows has PS 6.3 so for deploying portlets pdeploy can be used and it is in <JES_InstallDir>/PortalServer/bin
pdeploy deploy -u <amadmin> -w <adminuser> -p <adminuser> -g <war file name with full path>
the war file has to be given with its full location