[328th-ThunderAce]

Put the 4 RAR files in one folder, then double click on AAA_Community_Installer_ver_1_0_part01 and follow the steps from there. To add skins you need download the skin, unrar it, copy it and then go into Ubisoft/Il-2 Sturmovik 1946/PaintSchemes/Skins, then choose the plane you want to give the skin to example Hurricane Mk1 folder, and paste the skin there.

Hope this was of some help to you.