The one Who submits their will to Almighty God.
Just say these words.
Ash hadu an laa ilaha illa Allah, Wa ash hadu anna Muhammadan abduhu wa Rasooluhu.
I Testify there is no God worthy of worship except Allah, and I testify that Muhammad is his Servant and Messenger.
That is simple. You are Muslim. Study Quran, Learn Islam from the best example to mankind. Muhammad peace and blessings of Almighty God be upon him.
Learn to Pray to Almighty God on His terms. The Prayer. Click Here.
Learn about your Faith at : The New Muslim Guide. Click Here.
How a preacher / priest and His Wife and Kids became a Muslim, Amazing Story.
The Universal Messenger – Yusuf Estes