Cutting an arc

[Shanghyd]

I have a question on cutting an arc. I am using a Trak A.G.E. CNC Mill.
I know its not a bridgeport mill but there is no Trak section.

Here are my prompts:
XBegin
Y Begin
Z Rapid
Z Begin
X End
Y End
Z End
X Center
Y Center
Z Center
Conrad
Direction
Tool Offset
Z Feedrate
Tool #

I am trying to cut a rectangle that is 2.5"L X 3.5"W
There is a radius of .38 at the corners of the 2.5" length.
See image.

The way I want to cut it is to move to X0, Y0.
Move to Z0.
Move to X 2.5
Move to Y 3.5
Move to X0

I'm using a .5 endmill.
I don't know what value to put in the following to get the radius to come out right.


X End
Y End
Z End
X Center
Y Center
Z Center
Conrad
Direction
Tool Offset


Any help is surely appreciated.

[Shanghyd]

Well I figured it out.
The conrad is set to .380 in the first event. .380 in the second event and 0 in the 3rd event.
Worked great.