[Vince]

You need the trigonometric functions, i.e. sine and cosine.

pawn Код:

new
    Float:radius = 4.0;  
    Float:angle;

while(angle < 360.0)
{
    new Float:x = radius * floatsin(angle, degrees);
    new Float:y = radius * floatcos(angle, degrees);

    CreateDynamicObject(1598, x, y, 10.0, 0.0, 0.0, 0.0);

    angle += 0.5;
}

I'm not too good with trig stuff, but something along those lines ought to work.