Polygon circles from points

[ImranKlotz-Shiran]

I need a tool that can creat polygon circle from points as follow:
1. center of the circle should be the X,Y coordinate value of the point
2. the diameter of the circle should be based on the Z value of the point

Your help will be much appriciated.

Imran

[AntonioMoniz]

Create layer point from X;Y and add Z field to the table or prepare a excel sheet with X;Y and Z (and other fields if you want) use "Make XY Event Layer" tool to create the new layer. After create a buffer from points using the field Z for