As a new Muslim you may not have learnt the prayer as yet. You must begin learning it ASAP as this is the second pillar of Islaam, after the testimony of faith and the material is readily available on this site. For now, while you do not know how to pray, you should read at the time of every prayer:

Subhaan-Allaah wa’l-hamdu Lillaah wa laa ilaaha ill-Allaah wa Allaahu akbar wa laa hawla wa la quwwata illa Billaah

(Glory be to Allaah, praise be to Allaah, there is no god except Allaah and Allaah is Most great, there is no god except Allaah and there is no power and no strength except with Allaah).”

After which one should read:

Allaahumma ighfir li warhamni wahdini warzuqni wa ‘aafini

(O Allaah, forgive me, have mercy on me, guide me, and grant me provision and good health).”

Do this trying your best, and Allah Almighty knows when his slave is trying his or her best.

This is for someone who has not yet learnt the opening chapter of the Qur'an, which is a requirement for the prayer. So if someone has just become Muslim and the time for prayer has come and there is not enough time for him to learn it, then s/he must read the above. For a detailed answer as to why, please refer to the following link (click here).