Make sure they are in the Data folder, not just the Fallout New Vegas folder. Also, make sure you have activated them with either the game launcher or FOMM. If you use the default game launcher, click Data Files, then check the box next to both of those mods, then click play. If you use FOMM, simply check the box next to them, then click play. They should then be active and appear ingame. If you don't see them as options to check, you did not copy the files to the proper location; Which should be "Steam/Steamapps/Common/Fallout New Vegas/Data".
Alexander J. Velicky