jacki: If the word muslim simply means 'one who submits to God'... Yes. But Jesus did not act like muslim's faith & beliefs... He did'nt have Rhamadan and all the Moon things or pray in a Mosque. How do you explain that? Im confused.

see the concept of a mosque, Ramadan and moon things came through during times of Prophet Mohammed pbuh..
The fundamental reason of Islam is to believe in one God ...say no to idol worship and do not associate partners with God.. most of other major religion like Christianity , Judaism, Hinduism, Sikhism, etc also say God is one..Jesus being the prophet of his time and ppl also believed in one God.. and submitted his will to God...
One who believes in God being one and submitting in front of God is a Muslim.Jesus did that and hence he is a Muslim..
A Muslim is not a Muslim if he doesn't believe in Jesus,Moses , Jacob, Abraham, Noah, Adam ,etc
We Muslims call God as Allah.. because the word God has a plural Gods..The word Allah has no plural in Arabic and hence Allah is one, the most supreme..