I am a Mac rookie with an extensive PC background having trouble with some basics here. So I download a program dmg file to my desktop and run it which creates a disc drive icon on my desktop. I run the installer inside of that which gets the program installed but I then cannot get rid of the disc icon / installer left on my desktop. I must be going about this wrong in a PC fashion that does not apply properly here. Please help with steps for a good clean install. Thank you!