x3x33

How do I wipe the Tekkit Folder?

Im sorry if im posting this in the wrong place. I literally just created this account so im new to this forum. I have recently started playing on my friends Tekkit server. I have been able to connect and just play for the past 3 days. But when I launched the Technic Launcher, it offered an update. So when I updated my Tecknic and then attempted to connect to the tekkit server, I am getting a message saying, The server requires you to have the following mods: mod_IC2 c1.95 mod_IC2NulearControl v1.1.6 mod_BuildCraftTransport 2.2.14 mod_AdditionalPipes 2.1.3 (Minecraft 1.2.5, Buildcraft 2.2.14, Forge 3.0.1.75) mod_BuildcraftCore 2.2.14 mod_CompactSolars2.2 mod_Railcraft 5.2.4 mod_RedPowerWiring 2.0pr5b2 mod_RedPowerCore 2.0pr5b2 mod_RedPowerLogic 2.0pr5b2 mod_RedPowerWorld 2.0pr5b2 mod_ComputerCraft 1.33 mod_IronChest 3.3 mod_NetherOres 1.2.5R1.2.2 I dont know how to get those mods or even insert them. If someone could assist me that would be greatly appreciated. Thank you!