Duplicating in a circle
 

I know this is a silly question, but how do I duplicate an object in a perfect circle? What numbers should I type into my duplicate options box?

Any help would be much appreciated
:(

get your object and move it to the radius of the circle you want. Then hit insert to move the pivot point to the origin (Hint push and hold x to snap to the grid).

Then goto the duplicate options box and work out what increment you need (e.g. if you want 10 copies then 360/10 = 36. So you will rotate 36 degrees in Y and put the number of copies to 9 (because you already have one copy sitting there). And that's it done.
Alan

Thanx for you help Pure_Morning, that really helped.