i downloaded a application to my pc for n900. I then transferred it via usb connectivity to my downloads folder on n900. then i copied it to my documents folder. the prob is how do i install the application in that folder. it is a rar file. I downloaded something called 7 zip from repositories and i think i installed it with the x terminal (which i am nto too familiar with) but how do i use it to un rar the application and install it on my phone. any help would be greatly appreciated