A square shape as a single close line

[yyn]

I use createnurbs primitives to create a square in order to extrude along a path I know in max it really easy but in maya the square was formed with four lines once I select all of them the extrude with the path and it create four different signle surface could some one tell me how to solve this problem or help me to attach the four line into a signle closed shape because I use attach to attact the line but once to the attach the last line the last line will disappear ...... thank you

[dan-mcfarland]

I start with a nurbs square primative and trace over it with a degree1 ep curve (that way it is square). Then get rid of the maya primative. Snap to line then snap to point to close it
When the curve dissapears it means that they have different dirrections. Try and reverse the direction of one of them and then attach.
dan