Mount hjälp

behöver hjälp att installera ett spel, är nybörjare när de gäller sånt här och skulle behöva förklaring vad allt menas med..
1. Mount the DVD 1 file with PowerISO
2. When the install screen comes up and it says options on the bottom click this and uncheck "Launch game after installation has completed"
3. Click install and let it do its thing
4. When disc 1 finishes installing and the installer says to insert disc 2, you must first UNMOUNT DISC 1, then MOUNT DISC 2 in the same drive. This is very important because otherwise the installer still thinks that disc one is in the drive, and disc two is not even if both are mounted.
5. Let disc 2 install, upon completion click finish and the installer should close
6. Next run the application called "fsx_sp1_ENU" this basically an update for flight simulator (note that despite the name service pack 1, this is a service pack for the game not windows it self).
6. unrar the file named "FsimX_serviceP1_Fixed_Working", open the unrared file and copy the cracked .dll files into the microsoft flight simulator folder.
7. After this run the game and don't be surprised if the program takes a long time to load textures and such, this is normal and eventually the game should start.

Hoppas någon kan hjälpa mig, de jag vet inte förstår är hur man mountar.. :S