how do you replace the textures

how do you replace a texture you put on a aircraft and want to change it and its on the same type of plane

It's called a repaint. You have to download and install the repaint. It's not hard but does require some cut and paste editing of the aircraft configuration file for the particular aircraft and putting files in the correct location. You have to be careful that the repaint you download is for the version of aircraft that you want to repaint, they're many different repaints available. Go to a site such as www.avsim.com and search for repaints for your aircraft. The Read me file within the download should explain the installation procedure. Backup the files before you edit just in case you make a mistake.


Here is a link to over 500 FS sites that feature tons of downloads some of which are repaints. www.msfsgateway.com