im using astro to install it which should do that same as file explorer but it just wont install. i dont know if it is the file itself or if im doing somthing wrong???
Well, the easiest thing to do is just download the file to your computer.
Then be sure the file extension at the end is ".apk".
Then just mount your Droid (connect the USB cable, pull down the notification bar, select the open files, select mount).
Then open the drive that's created on your computer (mine is usually E:\), and then drop the .apk file on the SD card.
Unmount, then disconnect.
Open astro, and navigate to where u saved the .apk file, and select it, it should install.
I use my computer because it's easy to be sure the file is in the correct format. All this should take less than 5 mins after u do it for the first time