I want to be able to turn my instrument landing system(ILS) on manually in the FMC but cannot because I don't know how to swqitch to manual or how to even go about it. If anyone has any idea please help as soon as possible. Thanks

Read the big manual that came with your PURCHASE.

Please sign your name in your posts, it's the rules....Ok the aircraft will Autotune for you if you have set up the FMC correctly and selected a arrival runway.But if you want to input the ILS frequency yourself1. Bring up the NAV/RAD Page 2. Input freq into lsk 6L eg 110.30/301 3. up select to ILS-MLS PARK (LSK 4L)Rob