exporting MWO layout to altium designer

dear roommates
i've designed some wilkinson power divider in microwave office and exported the layout to altium designer 2009
im going to manipulate the layout in altium designer to fit the layout for special PCB.ok?
so i'm going to convert the rectangular filled area to curved filled area.but as we khnow in wilkinson power divider the lenghth of arms should follow the low of being λ/4 and if i make mistake maybe some problems occur with my design.so i'm looking for some method to convert the rectangular filled areas to curved filled areas remaining the dimensions constant.would you please help me solve this problem?

I don't understand your questions.
In AWR you can use curved sections, the export layout. Then import layout into Altium, if you press "p" in altium, you can see some options for drawing. There is one option for drawing any shape.

dear tony
thanks for your reply
in MWO how can we drow a curve as MLIN?
would you please help me with that?

Look at the MCURVE elements.