Denford Software & Machines

How would I add spindle spped to this code for vr mill for a micromill ns 2000?
I made the code in bobcad


%
G00X0.Y0.Z1.5
X-0.0152Y-0.0043
G01Z0.0625F20.
X4.8682F40.
Y0.0557
X-0.0152
Y0.1157
X4.8682
Y0.1757
X4.073
X4.0721
X4.0497Z0.0803
X4.0446Z0.0831
X4.0389Z0.0854
X3.9871Z0.1014
X3.9571Z0.1096
X3.9508Z0.1111
X3.9029Z0.1201
X3.8037Z0.1354
etc.....

I'm cutting styrene foam-then maybe wood or aluminum

At the very top you can add something like:
S2000 M03

You probably want to add G20 for inch programming (G21 for metric values) at the top as well.