yea i check'd on that i did these are the mod's that i have installed now
Railcraft 5.3.2
Buildcraft complete 3.1.5
Not Enough Items 1.2.2
Redpower complete 2.0pr5b2
Logsitics Pipes BC3-0.2.5B
Additional Buildcraft Objects 0.9
Industrialcraft 2 1.95b
Industrialcraft 2 Advanced Machines (with sounds) 4.0
Thaumcraft 2.1.6
Wireless Redstone (Chicken Bones version) 1.2.1
Shelf 1.2.5
Doggy Talents 2.1.0
Additional Pipes 3.1.0
Sneaky Pipes 0.1.1
Inventory Tweaks 1.41b
Industrialcraft 2 Nuclear Control 1.1.16
Steve's Carts 1.3.7
Iron Chests 3.3.1.21
Forestry 1.4.6.0
Matmos r14
Portalgun 1.2.5v1
3D Items
Rei's Minimap 3.0_06
Mo'Creatures 3.6.2
Smart Moving 8.1
Somnia v24
Death Chest 1.2.5
Forge 3.1.3.107
AudioMod 1.2.5
ModLoader 1.2.5
PlayerAPI 1.0
GuiAPI 0.14.2
Code Chicken Core 0.5.2
Custom Mob Spawner 1.4.3
OptiFine 1.2.5 HD B1
but the magnet pistion is the one i really want to install but i couldn't get it to i started from a fresh copy of minecraft after that to see if i could test one by one uninstalled minecraft fully and then step by step i deleted the meta floder in jar i went to install modloader and it booted up fine then next step i try to do it with forge installed and black screen then i try modloader then modloadermp and stuck at updating now i can get mod loader to start up with minecraft but anything after that its a negtive for me i know those mods work together because on my first version they were working fine you see i need those mods but i also would love to have magnet pistion's installed also but i'm starting to think it can't be done more piston's mod don't even work lol